Safety boundary
Use simulations or supervised low-voltage coil/magnet activities only. Do not use mains electricity, high-current coils, or improvised high-voltage equipment.
Explicit physics instruction
Preserve raw position/time or flux/time evidence alongside induced-voltage readings.
Compare slow and fast flux changes while keeping the coil geometry comparable.
Use repeated trials and uncertainty to decide whether the rate model is supported.
Vocabulary: induction trace; rate; flux; voltage; uncertainty.
Worked example
A faster magnet pass creates a narrower, taller voltage pulse while total direction reversal remains consistent with Lenz's law.
Guided question
Which graph pair best tests Faraday-style rate dependence?
Independent work
- Preserve raw time/flux/voltage data.
- Compare peak emf with change rate.
- Interpret sign reversal.
- Write one uncertainty and one revision.
Investigation / Data Lab
Use a simulation or supervised hand-moved magnet/coil system to compare induced voltage with rate and direction of magnetic-flux change.
Preserve raw traces, calculated rates, sign evidence, uncertainty, and one revision.
Misconception check
Peak voltage alone is incomplete evidence if the corresponding flux change is not documented.
Formative check
What evidence best supports a rate-dependent induction model?
Reveal response
Comparable trials showing larger emf for larger flux-change rate.
Mentor evidence conference
Ask Archaemenes to audit direction rules, rate reasoning, energy source, and model scope.
Teacher guidance
Foundation: Use supplied traces.
Core: Analyze peak, sign, and timing.
Extended: Estimate uncertainty and compare alternative models.