Target: independently transfer two-set union/neither reasoning and disjoint addition to new G. Prepare: blank two-set map and sum-or-product chooser; neutral access log.
- Launch · 2 min. Explain that G is a new fictional case; its first response will inform the next lesson.
- Source access · 4 min. Give only File G. Read numbers or notation neutrally if requested, without naming a calculation.
- Independent plan · 5 min. Learner chooses regions/operation and marks what “neither” and “one booking” mean.
- Independent response · 7 min. Choose Day 5 route; retain the initial calculation and explanation before content prompts.
- Self-audit · 4 min. Learner checks that the both-region is not doubled and a one-session booking is not a pair.
- Submit · 3 min. Collect response/access log; use public key for feedback, not a QCAA unit result.