Teacher copy: This page may include teaching prompts or answer keys. Answer keys in this public library can be viewed by anyone. Give learners a clean prompt, use checks as formative evidence, and change a case locally when prior access matters.
Target: independently transfer scarcity, next-best cost, factors and basic questions to new File G. Prepare: blank scarcity ledger and factors mat; log access support.
Launch · 2 min. State that a fresh fictional case, not personal finances, is the whole evidence base.
Source access · 4 min. Give File G alone and read its exact units if needed without explaining the answer.
Independent plan · 5 min. Learner marks the chooser, scarce input, next-best alternative, factor examples and one unknown distribution issue.
Independent response · 7 min. Choose Day 5 route; retain the first answer before content prompts.
Self-audit · 4 min. Learner checks that the opportunity cost is the forgone 15 signs, not 15 dollars, and flags any unsupported impact claim.
Submit · 3 min. Collect response/support log. Teacher uses the separate public key to pick the next instruction.