Classroom examples to adapt

See how AI could fit
into a science lesson.

Twelve classroom designs connect teacher preparation, investigation, explanation and assessment. Each includes a timed sequence using Teacher Resources, guidance for the educator and an independent exit task. Seven preparation prompt starters follow the examples.

05 / 06Physics · Chemistry · Biology

Proposed teaching design. These examples are suggestions for educators to adapt and evaluate. They are not classroom studies or evidence of effectiveness. No numerical class data is presented as observed.

Choose a subject

Twelve classroom examples.

Four per subject. Open an example below, or use the subject buttons to focus your browsing. Times are adaptable; choose the depth from learners' prior knowledge.

12 classroom examples

How to organise the lesson with Teacher Resources
  1. Prepare: use Personal teacher notes for the objective, materials, timing and a dated reminder. Preview the model or lab, check key terms in the dictionary and prepare answer guidance.
  2. Diagnose: select a question from the multiple-choice bank. Collect each learner's reason before showing the answer.
  3. Investigate: use a PhET simulation for a controlled model comparison, or a virtual lab for a guided procedure and evidence record.
  4. Explain and apply: revisit precise language and use a teacher-reviewed task from the problem generator. Give a small hint, then fade support for independent reasoning.
  5. Assess and reflect: combine a prepared quiz with the example's independent exit task. Save a note about misconceptions, successful support and the next teaching step.

AI links open a suggested subject, grade band and theme. Prepare, review and export generated materials before class when an AI connection is available. Every example also includes an exit task and teacher answer, plus an alternative using existing resources.

Physics

4 examples
EXAMPLE / 01Physics · Grades 9–12

Free fall: test a plausible explanation

Invite learners to examine the evidence for a falling-object claim, then revise it with its conditions made explicit.

50 minutes · Forces and motion

Use this example in the lesson guide ↗

Learning objective

Explain why objects have the same gravitational acceleration in an ideal model without air resistance, and distinguish that model from an actual fall.

Prior knowledge

Speed, acceleration, gravitational force and reading a time graph.

Teacher preparation

In Personal teacher notes, record the initial misconception you want to test. Prepare one matched pair of motion records and label each as measured, modelled or illustrative. Preview Projectile Motion with and without drag; use matched launch conditions and explain that a vertical launch is motion under gravity, rather than a measurement of an object dropped from rest.

Possible teaching sequence

  1. Elicit a prediction

    7 min
    Multiple-choice question bank ↗

    Teacher: Ask: ‘If two objects differ in mass, what would you expect to change during their fall, and why?’ Collect reasons before displaying answers.

    Learners: Answer a selected mechanics question individually, then compare explanations in pairs.

    Check for understanding: Distinguish ‘heavier falls faster’ from a conditional claim about air resistance.

  2. Explore the ideal model

    13 min
    Projectile Motion ↗

    Teacher: Use matched vertical-launch conditions in Projectile Motion. Change mass while drag is off, then contrast with a drag-on run. Ask which assumptions are being changed.

    Learners: Record settings and compare the modelled trajectories; keep model outcomes separate from actual measurements.

    Check for understanding: Learners identify the no-drag assumption and do not treat the model as experimental proof.

  3. Interpret evidence

    12 min
    Math & science dictionary ↗

    Teacher: Provide the prepared motion records. Ask learners to compare velocity changes over equal intervals and to name units.

    Learners: Annotate the records and calculate or describe acceleration where the data permit it.

    Check for understanding: Look for rate-of-change reasoning, consistent units and appropriate limits on the conclusion.

  4. Build and revise a claim

    12 min
    AI problem generator ↗

    Teacher: Use a reviewed open-response task asking whether a claim is supported by the stated evidence. Give a prompt about assumptions before giving a worked solution.

    Learners: Write a claim, supporting evidence and reasoning, then revise after peer questioning.

    Check for understanding: The explanation separates gravitational acceleration from drag effects; mass alone is not used as the whole explanation.

  5. Check transfer

    6 min
    AI quiz generator ↗

    Teacher: Ask the exit question below without the model on screen. Use a short prepared quiz only after collecting independent reasoning.

    Learners: Explain a new case individually and identify one limitation of the evidence.

    Check for understanding: Use explanations, rather than the quiz score alone, to decide what needs reteaching.

Ready-to-use exit task & teacher answer

Independent task

Two compact objects fall in an ideal vacuum model near Earth. One has twice the mass. Compare their gravitational force and acceleration.

Teacher answer guidance

The heavier object's gravitational force is twice as large, but its acceleration is the same: a = F/m = g. This conclusion assumes the stated ideal conditions.

Where AI might help

Ask the problem generator for one comparison of ideal and drag-affected falling motion. Ask the quiz generator for three questions about acceleration and assumptions. Check every answer against the chosen model and course reference before class.

Keep under educator control

Choose evidence with an explicit source, inspect axes and units, and keep air resistance and launch conditions visible. Follow local procedures if using physical apparatus. Do not claim a classroom drop establishes an exact universal result.

Support and extension

Support: Provide a partially labelled graph and a frame: ‘Under ___ conditions, the evidence supports ___ because ___.’

Extend: Compare predicted drag effects for equal masses with different areas, explaining why a simple mass-only rule fails.

Without AI

Use a printed, clearly labelled model table and teacher-selected motion records with the same prediction, comparison and transfer questions.

Design lens: Inquiry-based learning.

After teachingWhich learners distinguished a model from measured evidence? Record whether difficulty lay in acceleration, the force-to-mass ratio or the air-resistance assumption. Record a reflection ↗
EXAMPLE / 02Physics · Grades 9–12

Circuits: investigate resistance and current

Use a guided virtual investigation to test a current prediction, then use AI-prepared questions to check transfer.

55 minutes · Electricity and circuits

Use this example in the lesson guide ↗

Learning objective

Explain how current changes when resistance changes at fixed potential difference, using circuit readings and I = V/R.

Prior knowledge

A complete circuit, current, potential difference, resistance and simple substitution.

Teacher preparation

Preview the DC Virtual Lab with a battery, adjustable resistor, ammeter and voltmeter. Prepare a table with resistance, potential difference and current columns. Record the chosen battery setting and a reviewed answer key in your notes; use resistors rather than assuming a lamp is ohmic.

Possible teaching sequence

  1. Diagnose and predict

    7 min
    Multiple-choice question bank ↗

    Teacher: Use one electric-circuits question. Ask: ‘At fixed voltage, what do you predict if the resistance doubles?’

    Learners: Choose an answer and give a reason before checking it.

    Check for understanding: Notice whether current is described as used up or confused with voltage.

  2. Collect controlled evidence

    18 min
    Circuit Construction Kit: DC — Virtual Lab ↗

    Teacher: Demonstrate an ammeter in series and voltmeter across the resistor. Keep supply voltage fixed and change only resistance.

    Learners: Record at least three resistance/current pairs and verify the voltage for each.

    Check for understanding: Measurements support a controlled comparison; current and voltage are not interchanged.

  3. Explain the relationship

    10 min
    Math & science dictionary ↗

    Teacher: Ask learners to link the readings to I = V/R and the dictionary's definitions of current and potential difference.

    Learners: Write a causal explanation with quantities and units, then compare it with their prediction.

    Check for understanding: The explanation specifies fixed voltage and inverse dependence on resistance.

  4. Apply to a new circuit

    12 min
    AI problem generator ↗

    Teacher: Use one reviewed multi-step circuit problem. Give a unit or circuit-diagram hint before showing the solution.

    Learners: Calculate a new current, explain a changed resistor value and show their working.

    Check for understanding: Correct substitution is accompanied by an explanation of the change.

  5. Check independent understanding

    8 min
    AI quiz generator ↗

    Teacher: Use three prepared questions plus the exit task. Discuss distractors only after independent responses.

    Learners: Answer, justify one choice and correct their original explanation if needed.

    Check for understanding: Identify whether errors concern circuit connections, proportional reasoning or units.

Ready-to-use exit task & teacher answer

Independent task

A 6 V supply is connected across a 6 Ω resistor. Find the current, then predict it when the resistor becomes 12 Ω and the voltage stays fixed.

Teacher answer guidance

The currents are 1 A and 0.5 A. Doubling resistance halves current at the same potential difference in the stated ohmic model.

Where AI might help

Prepare a problem with a 6 V supply and a 6 Ω resistor, followed by a 12 Ω replacement. Ask for three quiz items distinguishing current from voltage; inspect all calculations and distractor explanations.

Keep under educator control

Keep voltage fixed, verify meter connections and state the ideal ohmic-resistor assumptions. Do not infer current from bulb brightness alone or generalise a constant resistance to every component.

Support and extension

Support: Provide an annotated circuit and the substitution frame I = ___ V / ___ Ω.

Extend: Compare an added series resistor with an added parallel branch and explain why the effects on supply current differ.

Without AI

Use teacher-prepared circuit diagrams and readings, or the virtual lab with the printed exit task and existing question bank.

Design lens: Inquiry-based learning.

After teachingNote whether meter placement, the meaning of voltage or inverse proportion needs the next lesson's attention. Record a reflection ↗
EXAMPLE / 03Physics · Grades 6–8

Energy: track the stores and transfers

Replace ‘energy disappears’ with an explanation of changing stores and transfers in a model system.

50 minutes · Energy

Use this example in the lesson guide ↗

Learning objective

Describe changes between gravitational potential, kinetic and thermal energy while accounting for the system's total energy.

Prior knowledge

Height, motion and an introductory idea of energy conservation.

Teacher preparation

Preview Energy Skate Park's energy displays with friction off and on. Fix one track and starting position. In your notes, prepare a two-case recording sheet and decide which objects are included in the system.

Possible teaching sequence

  1. Elicit everyday language

    6 min
    Multiple-choice question bank ↗

    Teacher: Ask: ‘When the skater slows down, where has the energy gone?’ Use one energy-bank item to uncover initial reasoning.

    Learners: Give an initial explanation without changing it after seeing another answer.

    Check for understanding: Record phrases such as ‘used up’ for later revisiting.

  2. Compare the model cases

    16 min
    Energy Skate Park ↗

    Teacher: Run the same track and release position with friction off, then on. Pause at matched positions and ask what each energy bar represents.

    Learners: Sketch the stores at high and low positions and compare the two cases.

    Check for understanding: Changes in one store are accounted for elsewhere in the selected system.

  3. Rebuild the explanation

    10 min
    Math & science dictionary ↗

    Teacher: Use the dictionary to distinguish energy, kinetic energy, potential energy and heating. Ask learners to name stores and transfer processes.

    Learners: Rewrite their first explanation using the observed energy displays.

    Check for understanding: With friction, increasing thermal energy is distinguished from destruction of energy.

  4. Apply an energy account

    11 min
    AI problem generator ↗

    Teacher: Use a reviewed problem containing a simple energy balance and ask for an explanation before arithmetic.

    Learners: Complete the account and identify which outputs are useful for the stated task.

    Check for understanding: The same system and energy units are used throughout.

  5. Check transfer and reflect

    7 min
    AI quiz generator ↗

    Teacher: Ask the exit task and use three short prepared questions. Save a note about the language learners used in their final answers.

    Learners: Explain a slowing object without saying energy has disappeared.

    Check for understanding: Learners distinguish conservation from usefulness of the transferred energy.

Ready-to-use exit task & teacher answer

Independent task

A model starts with 20 J. Later it shows 12 J of kinetic energy and 8 J in thermal stores. Explain whether energy has been lost from the accounted-for total.

Teacher answer guidance

The total remains 20 J. The thermal contribution accounts for the difference; reduced usefulness for motion is not destruction of energy.

Where AI might help

Draft a problem with 20 J initially available, 12 J later kinetic and 8 J transferred to thermal stores. Ask for quiz distractors about conservation and usefulness, then check the system boundary and wording.

Keep under educator control

Keep the reference level and starting conditions consistent. Describe energy of the relevant system, including thermal changes, and make clear that a simulation simplifies actual friction and surroundings.

Support and extension

Support: Provide colour-coded store names and a frame: ‘The decrease in ___ is accounted for by an increase in ___.’

Extend: For a stated purpose, distinguish total-energy conservation from efficiency and discuss how changing the system boundary affects the description.

Without AI

Use teacher-drawn energy bars, a paper energy account and the existing energy questions.

Design lens: Constructivism.

After teachingRecord whether the difficulty was naming stores, defining the system or explaining thermal transfers. Record a reflection ↗
EXAMPLE / 04Physics · Grades 9–12

Waves: separate amplitude, frequency and wavelength

Use one-variable comparisons to distinguish quantities that learners often describe simply as a ‘bigger wave.’

50 minutes · Waves

Use this example in the lesson guide ↗

Learning objective

Distinguish amplitude, frequency and wavelength and explain the relationship v = fλ for a stated wave speed.

Prior knowledge

Oscillation, time and length units, rate and reading a simple diagram.

Teacher preparation

Preview Wave on a String in oscillation mode and practise ruler/timer use. Prepare a recording table and choose constant tension and damping settings. Record those controls in your notes and check the example calculations.

Possible teaching sequence

  1. Diagnose the vocabulary

    6 min
    Multiple-choice question bank ↗

    Teacher: Ask learners to explain what ‘bigger’ could mean in two wave diagrams. Use one waves-bank question.

    Learners: Label possible amplitude and wavelength differences before checking answers.

    Check for understanding: Look for confusion between vertical displacement and horizontal separation.

  2. Change one quantity

    17 min
    Wave on a String ↗

    Teacher: First vary amplitude at fixed frequency and medium settings; then vary frequency at fixed amplitude and medium settings. Ask learners to keep a clear record of what changed.

    Learners: Measure or compare amplitude, cycle time and crest separation using the available tools.

    Check for understanding: Observations distinguish the controlled variable from the measured response.

  3. Connect representations

    10 min
    Math & science dictionary ↗

    Teacher: Compare the dictionary definitions with a position diagram and a time trace. Ask which axis makes a spacing a time rather than a length.

    Learners: Label amplitude, period and wavelength and state their units.

    Check for understanding: Period and wavelength are not read from the wrong kind of graph.

  4. Use the relationship

    10 min
    AI problem generator ↗

    Teacher: Give a reviewed problem with speed, frequency and wavelength. State explicitly when the medium and speed are unchanged.

    Learners: Use v = fλ, show substitutions and explain a frequency change.

    Check for understanding: The explanation uses the fixed-speed condition rather than a universal frequency-speed rule.

  5. Assess transfer

    7 min
    AI quiz generator ↗

    Teacher: Ask the exit task, then use three prepared questions with one diagram interpretation.

    Learners: Calculate independently and justify how the wavelength changes.

    Check for understanding: Check whether a correct numerical answer also has the correct conditional explanation.

Ready-to-use exit task & teacher answer

Independent task

A wave travels at 6 m/s with frequency 2 Hz. Find its wavelength. If frequency becomes 4 Hz while speed stays 6 m/s, find the new wavelength.

Teacher answer guidance

λ = v/f gives 3 m and 1.5 m. Doubling frequency halves wavelength when speed is held fixed.

Where AI might help

Draft a wave problem with speed 6 m/s and frequency 2 Hz, followed by a frequency of 4 Hz in the same medium. Ask for distractors mixing period and wavelength, then check diagrams, units and assumptions.

Keep under educator control

Keep tension and relevant medium settings constant in the frequency comparison. Separate model behaviour from every possible real wave system; use the constant-speed assumption only where justified.

Support and extension

Support: Provide separate position/time axes and mark one cycle before learners measure quantities.

Extend: Compare two different tensions to show why changing the medium condition can change wave speed and invalidate the earlier fixed-speed assumption.

Without AI

Use paired wave diagrams and a teacher-prepared measurement table with the same comparison and calculation tasks.

Design lens: Inquiry-based learning.

After teachingRecord whether learners confused representations, units or the conditions behind v = fλ. Record a reflection ↗

Chemistry

4 examples
EXAMPLE / 05Chemistry · Grades 6–8

Conservation of mass: define the system

Make the measured boundary explicit before interpreting a mass change during a reaction.

50 minutes · Chemical reactions

Use this example in the lesson guide ↗

Learning objective

Explain a before-and-after mass comparison by identifying the system boundary and what can cross it.

Prior knowledge

Mass measurement, substances and introductory particle models of reactions.

Teacher preparation

Prepare paired before/after records for an open and a closed system, with uncertainties and data origin identified. Use existing measured data or clearly labelled illustrative values. Preview Balancing Chemical Equations as a particle-count model, and prepare a diagram showing where gas could leave a measured system.

Possible teaching sequence

  1. Diagnose the idea

    6 min
    Multiple-choice question bank ↗

    Teacher: Ask: ‘If bubbles escape from a flask on a balance, what has the balance stopped counting?’

    Learners: Predict the reading and explain what is inside their chosen boundary.

    Check for understanding: Look for loss of gas from the measured system, rather than destruction of matter.

  2. Represent conserved atoms

    12 min
    Balancing Chemical Equations ↗

    Teacher: Use Balancing Chemical Equations to ask which particle counts change and which remain equal. Keep formulas unchanged while balancing.

    Learners: Count atoms of each element before and after and explain the coefficients.

    Check for understanding: Atoms are rearranged; changing a subscript is not a valid balancing method.

  3. Interpret measurements

    14 min
    Math & science dictionary ↗

    Teacher: Provide the paired records and ask learners to draw the balance's boundary. Ask whether a small difference exceeds the stated measurement uncertainty.

    Learners: Separate observed readings from explanations and mark any material crossing the boundary.

    Check for understanding: Interpretations consider the boundary and measurement limits together.

  4. Explain a comparison

    11 min
    AI problem generator ↗

    Teacher: Use a reviewed open-response problem contrasting an open gas-producing reaction with a closed-system record.

    Learners: Write an evidence-based explanation and name another observation that would strengthen it.

    Check for understanding: A balance change alone is not treated as proof of a particular cause.

  5. Assess transfer

    7 min
    AI quiz generator ↗

    Teacher: Ask the exit question, then collect an independent explanation before discussing quiz choices.

    Learners: Apply the boundary idea to a new gas-producing scenario.

    Check for understanding: The answer distinguishes total-system mass from the mass of material remaining on the balance.

Ready-to-use exit task & teacher answer

Independent task

An open flask loses measured mass while a gas forms and escapes. Has the evidence shown that atoms were destroyed? Explain.

Teacher answer guidance

No. Gas can leave the system being weighed, so the balance no longer includes that material. Atom conservation concerns the full accounted-for system; the observed change alone does not identify every cause.

Where AI might help

Ask AI for one boundary-comparison problem and three questions about atom conservation. Review the formulas and keep illustrative values labelled as invented model data.

Keep under educator control

Check equations and the source of every numerical record. The particle simulation illustrates a conservation model; it is not a balance measurement. Use teacher-approved procedures for any actual reaction.

Support and extension

Support: Provide an outline of the boundary and arrows learners can label with substances entering or leaving.

Extend: Compare a reacting metal's increasing mass with an escaping-gas reaction and identify the oxygen or gas crossing each boundary.

Without AI

Use printed particle diagrams, the labelled data records and the exit question with teacher-written discussion prompts.

Design lens: Inquiry-based learning.

After teachingRecord whether learners drew a meaningful boundary and distinguished their observations from their explanations. Record a reflection ↗
EXAMPLE / 06Chemistry · Grades 9–12

Dilution: plan a target concentration

Move from a particle model of dilution to a planned and checked virtual solution preparation.

55 minutes · Quantitative chemistry

Use this example in the lesson guide ↗

Learning objective

Plan a dilution using conservation of dissolved solute amount and verify the target concentration in a virtual lab.

Prior knowledge

Solute, solvent, solution, concentration and molarity; rearranging a formula.

Teacher preparation

Preview Concentration and the ChemCollective stockroom. Choose one compatible stock solution and target, practise the available transfer tools, and prepare a table for stock concentration, stock volume and final volume. Add your calculated key and apparatus plan to Personal teacher notes.

Possible teaching sequence

  1. Predict the particle change

    6 min
    Math & science dictionary ↗

    Teacher: Ask: ‘What changes when water is added without adding or removing dissolved solute?’

    Learners: Use the dictionary to state what stays constant and what increases.

    Check for understanding: Learners distinguish solute amount from concentration.

  2. Explore dilution

    12 min
    Concentration ↗

    Teacher: Use Concentration to add solvent while keeping dissolved solute amount unchanged. Avoid draining solution in this comparison because that also removes solute.

    Learners: Record the direction of volume and concentration changes and connect them to the particle model.

    Check for understanding: Lower concentration is not described as disappearance of solute.

  3. Plan before preparing

    12 min
    AI problem generator ↗

    Teacher: Use a reviewed dilution task. Ask learners to derive C₁V₁ = C₂V₂ from equal solute amounts and check compatible units.

    Learners: Calculate the stock aliquot and describe dilution to the final volume.

    Check for understanding: The final-volume instruction is distinguished from simply adding a numerically calculated water volume.

  4. Carry out the virtual plan

    17 min
    ChemCollective Virtual Lab ↗

    Teacher: Open ChemCollective and ask pairs to follow their plan. Pause if the selected stock or apparatus differs from the planned conditions.

    Learners: Record the actual transfers and compare the resulting concentration with the target.

    Check for understanding: The written procedure and virtual result are checked against each other.

  5. Check transfer

    8 min
    AI quiz generator ↗

    Teacher: Use the exit task and three prepared questions about solute amount, concentration and final volume.

    Learners: Solve independently and explain the preparation in words.

    Check for understanding: Correct quantities and a correct procedural statement are both required.

Ready-to-use exit task & teacher answer

Independent task

Prepare 100 mL of 0.10 mol/L solution from 0.50 mol/L stock of the same solute. State the stock volume and the preparation instruction.

Teacher answer guidance

Use 20 mL of stock, then add solvent to reach 100 mL final solution volume. The dissolved solute amount is conserved in this ideal dilution.

Where AI might help

Draft a target-preparation problem using 0.50 mol/L stock, a 0.10 mol/L target and 100 mL final volume. Review calculations and insist on dilution to the final volume in the teacher key.

Keep under educator control

Use the same solute with no reaction during dilution, consistent concentration units and compatible virtual apparatus. Verify every value and distinguish the planned numerical model from an actual laboratory preparation.

Support and extension

Support: Provide a quantities table and label which volume refers to the stock aliquot and which to the final solution.

Extend: Design a serial dilution and show how uncertainty or a mistaken transfer propagates through the steps.

Without AI

Use particle diagrams, a teacher-checked dilution plan and screenshots or a prepared procedural comparison.

Design lens: Inquiry-based learning.

After teachingRecord whether errors came from algebra, volume labels, units or misunderstanding what dilution conserves. Record a reflection ↗
EXAMPLE / 07Chemistry · Grades 9–12

Acids: distinguish strength from concentration

Use controlled model comparisons to challenge the assumption that ‘strong’ and ‘concentrated’ mean the same thing.

50 minutes · Acids, bases and salts

Use this example in the lesson guide ↗

Learning objective

Distinguish acid strength from concentration and interpret pH using the ionisation model under stated conditions.

Prior knowledge

Acids, ions, concentration and an introductory pH scale.

Teacher preparation

Preview Acid-Base Solutions and choose comparable strong/weak acid settings at equal concentration. Prepare a table separating concentration, ionisation and pH. In your notes, record the terminology and model limits to revisit during the debrief.

Possible teaching sequence

  1. Expose the initial distinction

    7 min
    Multiple-choice question bank ↗

    Teacher: Use an acids-and-bases bank item. Ask whether a weak acid can be concentrated and require a reason.

    Learners: Choose an answer and define the two words in their own language.

    Check for understanding: Look for concentration and extent of ionisation being conflated.

  2. Compare equal concentrations

    15 min
    Acid-Base Solutions ↗

    Teacher: Keep analytical acid concentration comparable and contrast the model's strong and weak acids. Ask what changes in the particle representation and pH reading.

    Learners: Record molecular/ionic patterns and pH evidence for each condition.

    Check for understanding: A different pH is explained through ionisation rather than assumed different starting concentration.

  3. Repair the language

    10 min
    Math & science dictionary ↗

    Teacher: Use the dictionary definitions of acid, concentration and pH. Ask learners to qualify their claims by solvent and stated conditions.

    Learners: Write two sentences that use strength and concentration separately.

    Check for understanding: The explanation does not say that weak means less acid was added.

  4. Interpret a contrasting case

    11 min
    AI problem generator ↗

    Teacher: Use one reviewed comparison problem. Include enough information to avoid asking learners to rank pH from the word ‘weak’ alone.

    Learners: Explain the case from concentration and ionisation evidence rather than guessing a numerical pH.

    Check for understanding: Learners recognise that strength alone is insufficient when concentrations differ.

  5. Check independent reasoning

    7 min
    AI quiz generator ↗

    Teacher: Use the exit task and three prepared questions; discuss which missing condition would matter in a changed comparison.

    Learners: Explain the equal-concentration case and identify the limitation of a general claim.

    Check for understanding: The answer connects pH to hydronium concentration under the stated aqueous conditions.

Ready-to-use exit task & teacher answer

Independent task

Two aqueous acids have the same analytical concentration. One is largely ionised and the other only partially ionised. Explain why they can have different pH values.

Teacher answer guidance

Their ionisation differs, so their hydronium-ion concentrations can differ despite equal total acid concentration. Under comparable conditions the more strongly ionised acid has the lower pH in this model.

Where AI might help

Ask for a conceptual comparison of two aqueous acids at the same stated concentration, one strongly ionised and one partially ionised. Check that the quiz never equates acid strength with total concentration.

Keep under educator control

State the acid model, solvent and conditions. Treat pH as logarithmic at this level and do not imply neutral pH is 7 at every temperature. Use the simulation as a model rather than an unqualified classification of all acids.

Support and extension

Support: Give a two-column comparison: amount per volume versus ionisation behaviour. Ask learners to place each statement in one column.

Extend: Compare cases with different concentrations and discuss why neither pH nor concentration alone fully identifies acid strength.

Without AI

Use paired teacher-drawn particle diagrams, a labelled pH comparison and the existing acids-and-bases questions.

Design lens: Constructivism.

After teachingRecord whether learners changed only their vocabulary or also separated the two underlying concepts. Record a reflection ↗
EXAMPLE / 08Chemistry · Grades 9–12

Reacting quantities: identify what limits the product

Connect a particle-count model with mole ratios, then explain why excess reactant remains.

55 minutes · Quantitative chemistry

Use this example in the lesson guide ↗

Learning objective

Use a balanced equation to identify a limiting reactant and calculate the theoretical product and excess reactant amounts.

Prior knowledge

Balancing equations, mole amounts and simple ratios.

Teacher preparation

Preview Reactants, Products and Leftovers and Balancing Chemical Equations. Choose one reaction whose displayed ratios match your planned equation. Prepare a ratio table, review every numerical answer and record the expected leftover species in your notes.

Possible teaching sequence

  1. Make a ratio prediction

    7 min
    Multiple-choice question bank ↗

    Teacher: Ask whether having more of one reactant guarantees more product. Use a stoichiometry-bank item to reveal the starting reasoning.

    Learners: Predict the limiting component in a simple particle or mole-count case.

    Check for understanding: Notice comparisons based only on the smaller number or mass.

  2. Explore product and leftovers

    16 min
    Reactants, Products and Leftovers ↗

    Teacher: Keep one reactant amount fixed and increase the other in the model. Ask when further addition stops increasing product.

    Learners: Record starting particles, product particles and leftovers in several cases.

    Check for understanding: The explanation uses the reaction ratio and identifies the exhausted reactant.

  3. Connect to the balanced equation

    10 min
    Balancing Chemical Equations ↗

    Teacher: Check the equation with Balancing Chemical Equations. Ask what each coefficient compares and distinguish mole ratios from mass ratios.

    Learners: Map particle groups to coefficients and then to amounts in moles.

    Check for understanding: Learners preserve substance formulas and use coefficients correctly.

  4. Solve a new amount problem

    14 min
    AI problem generator ↗

    Teacher: Use a reviewed multi-step problem. Prompt learners to compare available amount divided by its stoichiometric coefficient before calculating product.

    Learners: Show the limiting-reactant calculation, product amount and remaining excess.

    Check for understanding: Working accounts for both substances and uses coherent units.

  5. Assess and clarify language

    8 min
    AI quiz generator ↗

    Teacher: Use the exit task and a short quiz. Refer to the dictionary if ‘limiting,’ ‘excess’ or ‘theoretical yield’ is used loosely.

    Learners: Explain why leftovers remain even when the reaction has consumed its limiting reactant.

    Check for understanding: A numerical answer is supported by a ratio-based explanation.

Ready-to-use exit task & teacher answer

Independent task

For 2H₂ + O₂ → 2H₂O, begin with 5 mol H₂ and 1 mol O₂. Find the limiting reactant, maximum water amount and hydrogen left over.

Teacher answer guidance

O₂ limits the reaction. It consumes 2 mol H₂, forms 2 mol H₂O and leaves 3 mol H₂, assuming complete reaction along the stated equation.

Where AI might help

Ask for one problem using 2H₂ + O₂ → 2H₂O with 5 mol H₂ and 1 mol O₂. Check balancing, limiting-reactant logic and leftovers. Use separate questions to diagnose mass-ratio and mole-ratio confusion.

Keep under educator control

State the ideal complete-reaction assumption and distinguish theoretical from actual yield. Do not infer a limiting reactant solely from whichever supplied mass looks smaller.

Support and extension

Support: Provide a table showing available moles, required ratio and reaction extent, then fade that table for the exit task.

Extend: Introduce actual yield or purity only after the limiting-reactant account is secure, keeping the new assumption explicit.

Without AI

Use counters or paper particle cards, a balanced equation and teacher-checked numerical problems.

Design lens: Zone of proximal development.

After teachingRecord whether the main barrier was balancing, proportional reasoning, entity count or translating moles into masses. Record a reflection ↗

Biology

4 examples
EXAMPLE / 09Biology · Grades 9–12

Photosynthesis: critique and reconstruct

Use a clearly labelled flawed explanation to help learners separate matter, energy and the processes of photosynthesis and respiration.

50 minutes · Energy in living systems

Use this example in the lesson guide ↗

DELIBERATE ERRORS — TEACHER-LED CRITIQUE. Keep this label attached to the stimulus and use the verified correction key in the debrief.

Learning objective

Correct claims about photosynthesis using a trusted reference and explain how plant matter and energy transfers differ.

Prior knowledge

Cells, carbon dioxide, water, glucose, light and cellular respiration.

Teacher preparation

Prepare the deliberate-error stimulus and correction key below. Check the chosen biology reference and preview the Photosynthesis and Cellular Respiration lab on its provider site. In your notes, plan a debrief for each error; prepare screenshots or a source-based evidence sheet if the lab is unavailable.

Possible teaching sequence

  1. Capture the initial model

    6 min
    Math & science dictionary ↗

    Teacher: Ask where the carbon in a growing plant comes from; do not provide the answer yet.

    Learners: Write a brief explanation and identify matter inputs separately from energy input.

    Check for understanding: Notice whether soil or sunlight is being treated as the source of carbon.

  2. Critique the labelled draft

    10 min
    Math & science dictionary ↗

    Teacher: Present the three statements below with the deliberate-error label attached. Ask for a reason and reference for every proposed correction.

    Learners: Annotate each claim using approved class material and the dictionary as a wording aid.

    Check for understanding: Corrections must explain why the original statement is inaccurate.

  3. Examine a process model

    14 min
    Photosynthesis and Cellular Respiration lab ↗

    Teacher: Guide the lab's light/dark comparison. Ask: ‘What does the indicator measure, and what does it tell us only indirectly?’ Use your prepared evidence sheet if needed.

    Learners: Record conditions and evidence, then relate the result to the net balance of the two processes.

    Check for understanding: A net indicator change is not interpreted as a direct measurement of photosynthesis alone.

  4. Reconstruct the explanation

    13 min
    AI problem generator ↗

    Teacher: Reveal and discuss the verified key. Use a reviewed problem asking learners to connect carbon source, light energy and respiration.

    Learners: Write a corrected explanation independently, then underline the evidence or reference supporting each change.

    Check for understanding: All three misconceptions are resolved in the learner's own wording.

  5. Check a new case

    7 min
    AI quiz generator ↗

    Teacher: Ask the exit question and use three selected or prepared questions to check the matter-energy distinction.

    Learners: Explain why a plant can release carbon dioxide in darkness without contradicting photosynthesis.

    Check for understanding: Look for ongoing respiration and absence of light-driven photosynthesis in the stated conditions.

Ready-to-use exit task & teacher answer

Independent task

A plant is kept in darkness for a short interval. Explain why carbon dioxide may increase around it.

Teacher answer guidance

Cellular respiration can continue and release carbon dioxide while light-driven photosynthesis does not occur. The explanation concerns the stated interval and conditions.

Where AI might help

Prompt P07 can draft a critique passage; use only the three intended errors after review. The problem generator can draft a light/dark interpretation task. The teacher supplies the checked correction key and leads the debrief.

Keep under educator control

Keep the deliberate-error label with the stimulus. Resolve each error before the lesson ends. Explain what the lab's indicator can and cannot establish, and avoid treating a simplified model as complete plant physiology.

Support and extension

Support: Supply a matter/energy sorting table and a sentence frame linking a correction to its reference.

Extend: Discuss why net carbon-dioxide exchange depends on both respiration and photosynthesis, including a condition where the rates balance.

Without AI

Use the original statements and verified corrections below with a textbook diagram and a prepared light/dark evidence sheet.

Design lens: Constructivism.

Labelled stimulus & correction key

DELIBERATELY INACCURATE STATEMENTS — FOR CRITIQUE

  1. Plants obtain most of their dry mass from soil.
  2. Sunlight is a material reactant that turns into glucose.
  3. Plants stop cellular respiration when light is available.

Teacher correction key

  1. Carbon dioxide supplies the carbon incorporated into organic molecules; water and mineral uptake also matter, but soil is not the main source of carbon in plant dry mass.
  2. Light supplies energy; carbon dioxide and water supply matter in the familiar school model of photosynthesis.
  3. Plants respire in light and darkness. Net gas or indicator changes depend on the balance of photosynthesis and respiration, not on respiration switching off.
After teachingRecord which misconception survived the first critique and whether the final explanation separated matter, energy and net exchange. Record a reflection ↗
EXAMPLE / 10Biology · Grades 9–12

Membranes: distinguish diffusion from active transport

Use a model comparison to explain transport direction and the role of proteins and energy.

50 minutes · Transport and exchange

Use this example in the lesson guide ↗

Learning objective

Distinguish diffusion, facilitated diffusion and active transport by gradient, protein involvement and energy requirements.

Prior knowledge

Cell membranes, concentration, random particle motion and ATP at an introductory level.

Teacher preparation

Preview Diffusion and Membrane Transport. Choose a solute and a membrane/protein setup supported by the model. Prepare a comparison table with net direction, protein involvement and energy use, and note how the simplified model differs from a whole cell.

Possible teaching sequence

  1. Predict net movement

    6 min
    Multiple-choice question bank ↗

    Teacher: Ask: ‘If particles move randomly both ways, why can there be a net movement?’ Use a membrane-transport question.

    Learners: Draw particle movements and predict the overall direction.

    Check for understanding: Distinguish individual random movement from net flux.

  2. Establish diffusion

    10 min
    Diffusion ↗

    Teacher: Use Diffusion to compare an initial concentration difference with a later distribution. Ask whether particles stop moving at equilibrium.

    Learners: Record the changing overall pattern while tracking continued particle motion.

    Check for understanding: Learners explain net movement without claiming purposeful particle behaviour.

  3. Investigate membrane mechanisms

    16 min
    Membrane Transport ↗

    Teacher: Use Membrane Transport to compare available protein-mediated and energy-dependent cases. Ask what evidence distinguishes a protein pathway from an active process.

    Learners: Complete the comparison table for gradient direction, proteins and energy.

    Check for understanding: A transport protein's presence alone is not taken as proof of active transport.

  4. Explain a new scenario

    11 min
    AI problem generator ↗

    Teacher: Use a reviewed open-response task. Refer to dictionary definitions and ask learners to justify a mechanism using the provided evidence.

    Learners: Explain a net transport direction and identify what additional information is needed when the mechanism is ambiguous.

    Check for understanding: Conclusions match the evidence; osmosis is not used as a label for solute movement.

  5. Check independent distinctions

    7 min
    AI quiz generator ↗

    Teacher: Use three prepared questions and the exit task, then record which mechanism pairs remain confused.

    Learners: Answer without the comparison table and justify the energy distinction.

    Check for understanding: Learners distinguish facilitated diffusion from transport against a gradient.

Ready-to-use exit task & teacher answer

Independent task

A substance moves through a membrane protein down its concentration gradient without direct cellular energy input. Does the protein prove this is active transport? Explain.

Teacher answer guidance

No. The stated case is consistent with facilitated diffusion. Protein involvement alone does not establish energy-dependent transport against a gradient.

Where AI might help

Draft membrane scenarios specifying the substance, gradient, transport protein and energy condition. Reject answer keys that label every protein-mediated process active transport.

Keep under educator control

State whether the simple concentration-gradient model is sufficient or whether an electrochemical gradient matters. The selected model does not represent every solute, membrane or cellular regulation process.

Support and extension

Support: Provide a partly completed mechanism table and ask first for the moving substance and gradient direction.

Extend: Introduce charged solutes and discuss why concentration alone may not predict movement when electrical differences matter.

Without AI

Use particle diagrams, mechanism cards and the checked comparison table with the same explanation task.

Design lens: Inquiry-based learning.

After teachingRecord whether learners needed help with net movement, gradients, energy or the distinction between solute movement and osmosis. Record a reflection ↗
EXAMPLE / 11Biology · Grades 6–8

Natural selection: explain a population change

Follow generations in a model population and replace need-based explanations with variation, inheritance and reproductive success.

55 minutes · Evolution and ecology

Use this example in the lesson guide ↗

Learning objective

Explain how heritable variation and different reproductive success can change a population across generations.

Prior knowledge

Variation, inheritance, populations and a simple feeding relationship.

Teacher preparation

Preview Natural Selection and select one heritable trait with one relevant selection condition. Prepare a record of trait frequencies or counts across generations and a no-selection comparison where the model allows it. Plan repeated runs and a discussion of chance; put the settings in your notes.

Possible teaching sequence

  1. Surface the initial explanation

    7 min
    Multiple-choice question bank ↗

    Teacher: Ask: ‘Does an individual develop an inherited trait because it needs it?’ Use an evolution-bank item and collect reasons.

    Learners: Write an initial explanation of a possible population change.

    Check for understanding: Notice need-based language and confusion between individual and population change.

  2. Follow controlled generations

    19 min
    Natural Selection ↗

    Teacher: Use a chosen existing heritable variant, then change one selection condition while recording the other settings. Repeat where time permits.

    Learners: Track trait counts or proportions over several generations and compare runs.

    Check for understanding: Evidence is recorded across generations, and chance differences are not hidden.

  3. Build the mechanism

    10 min
    Math & science dictionary ↗

    Teacher: Use dictionary definitions of population, adaptation and natural selection. Ask learners to connect variation, inheritance and reproduction in order.

    Learners: Explain the observed pattern with a sequence of cause-and-effect statements.

    Check for understanding: Individuals do not change their inherited traits simply to meet a need.

  4. Transfer to a new environment

    12 min
    AI problem generator ↗

    Teacher: Use a reviewed open-response task changing the environment without asserting one trait is universally best.

    Learners: Predict a possible direction of population change and justify it conditionally.

    Check for understanding: Predictions depend on the environment and inherited variation already available.

  5. Check the independent account

    7 min
    AI quiz generator ↗

    Teacher: Ask the exit task and use three prepared questions. Save a reflection on whether learners still use ‘wanted’ or ‘needed’ as the mechanism.

    Learners: Write a population-level explanation without the model on screen.

    Check for understanding: The response identifies differential reproductive success over generations.

Ready-to-use exit task & teacher answer

Independent task

An inherited trait becomes more common after several generations in a changed environment. Explain a selection mechanism without saying individuals changed because they needed to.

Teacher answer guidance

Heritable variation was present. In the stated environment, some variants led to greater reproductive success, so their contribution to later generations increased. Chance and other processes may also matter.

Where AI might help

Ask AI for a new environment comparison requiring variation, inheritance and reproduction. Check that neither the problem nor its key claims that mutation occurs because organisms need a trait.

Keep under educator control

Explain the model's limited traits and environments, distinguish selection from chance and avoid equating dominant alleles with advantage. Do not extrapolate one short run as a guaranteed outcome.

Support and extension

Support: Provide the frame: ‘Individuals varied in ___. Those with ___ left more offspring under ___. Across generations ___.’

Extend: Compare selection with chance-driven frequency changes, or consider a changed environment where a previously advantageous trait is less favourable.

Without AI

Use paper trait cards and repeated sampling with a teacher-defined selection rule; label the activity as a simplified model.

Design lens: Constructivism.

After teachingRecord whether learners distinguished inheritance, selection, chance and the timescale of population change. Record a reflection ↗
EXAMPLE / 12Biology · Grades 9–12

Gene expression: connect DNA, RNA and protein

Use a molecular model to distinguish transcription from translation and reason about changes in protein production.

55 minutes · Genetics and inheritance

Use this example in the lesson guide ↗

Learning objective

Explain the roles of DNA, mRNA and ribosomes and distinguish changes in gene expression from changes in DNA sequence.

Prior knowledge

DNA, genes, cell organisation and protein function.

Teacher preparation

Preview Gene Expression Essentials and choose one available regulatory control affecting expression. Prepare a DNA → RNA → protein diagram and a record of settings and output. Check the problem and quiz keys against the chosen course reference, and save the intended misconception in your notes.

Possible teaching sequence

  1. Diagnose the process order

    7 min
    Multiple-choice question bank ↗

    Teacher: Use one gene-expression question and ask what the ribosome reads.

    Learners: Order DNA, mRNA and protein cards and justify each arrow.

    Check for understanding: Look for DNA being described as read directly by the ribosome.

  2. Trace the model

    16 min
    Gene Expression Essentials ↗

    Teacher: Pause the model at transcription and translation. Ask learners to name the molecule being used and the product being made at each stage.

    Learners: Annotate the process diagram and distinguish a DNA sequence from its expression.

    Check for understanding: RNA production and polypeptide assembly are assigned to the correct processes.

  3. Compare a regulatory change

    11 min
    Gene Expression Essentials ↗

    Teacher: Change one available regulatory setting while keeping the DNA sequence constant. Ask which observed output changed and which information remained the same.

    Learners: Record the setting, RNA/protein output where visible and a conditional explanation.

    Check for understanding: A change in expression is not automatically labelled a mutation.

  4. Explain a process interruption

    13 min
    AI problem generator ↗

    Teacher: Use a reviewed problem specifying which process is affected. Offer a diagram hint before giving the answer, and use the dictionary to clarify gene and ribosome.

    Learners: Predict the consequence and connect it to the process sequence.

    Check for understanding: The explanation separates transcription, translation and DNA sequence change.

  5. Check a new case

    8 min
    AI quiz generator ↗

    Teacher: Use the exit question and three prepared items, including one about unchanged DNA with altered protein output.

    Learners: Answer independently and revise their original process diagram.

    Check for understanding: The final account names the correct molecular roles and avoids one-gene/one-trait oversimplification.

Ready-to-use exit task & teacher answer

Independent task

Translation is inhibited while transcription can continue. Predict the immediate effect on synthesis of new protein, and state whether this alone shows that DNA has mutated.

Teacher answer guidance

New protein synthesis through the inhibited translation process decreases or stops, while mRNA may still be made. This does not by itself show a DNA sequence change; existing proteins can remain for a time.

Where AI might help

Ask for a scenario where transcription continues but translation is inhibited. Review the timing and any claim about existing protein before use. Quiz questions should distinguish regulation from mutation.

Keep under educator control

State what the selected simulation control represents. Do not imply every gene codes for a protein or that one gene alone determines every phenotype. Existing RNA and protein can persist, so specify timescale when predicting effects.

Support and extension

Support: Provide separate boxes for information source, intermediate molecule, synthesis site and product; gradually remove labels.

Extend: Discuss why cells with the same DNA can produce different proteins, and add RNA processing or protein degradation if appropriate to the course.

Without AI

Use process cards, an annotated textbook diagram and a teacher-written interruption scenario.

Design lens: Zone of proximal development.

After teachingRecord whether learners confused molecules, processes, regulation or the timescale of a predicted response. Record a reflection ↗

Available now · educator preparation

Prompt starters for teachers.

These seven editable prompts support teacher preparation. They are not student worksheets or validated materials. Replace each bracket with your lesson context and avoid identifiable learner information.

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Prompt examples are based on activities suggested in the original website brief. The educator checks beside each prompt are part of this resource. They do not guarantee a correct result.

Start from your own objective

Plan a lesson in seven steps.

Open the lesson guide ↗