Invitation: “Explain why a different assumption can change a result.” Prepare: Ordinary web; SOURCE-CAPSULES; my-explanation aid. Selected opportunities: U02 / I06 / I07 / I08; conditional on actual component evidence, not blanket code completion.
Make two small options · 5 minutes
Present fewer caterpillars in the ordinary model again, with no held source graph. Learner sketches/dictates two possible glider outcomes: decline or little immediate change. They choose which to explain first, and may instead pose uncertainty with two reasons.
Attach evidence to each · 8 minutes
For decline, trace F3 and name dependence on insect food. For buffering, trace F4/F5 and name possible alternative resources. Read the source locator when requested. Sources document feeding possibilities; none supplies amounts sufficient to decide this scenario. Separate the expert fact from a model assumption.
Compose paired explanations · 12 minutes
Learners create two captions or a spoken comparison: “If … then … because …; however … remains unknown.” Offer “delayed effect” if time is relevant. Let one explanation remain a component today; do not force polished prose or all source IDs. Split after this stage.
Probe the claim · 15 minutes
Use the ordinary teacher claim “A remaining arrow proves the gliders will be fine.” Learners challenge the sufficiency assumption using food amount/access and time. They may agree only under specified assumptions, rather than repeating a teacher verdict. Consider whether enough evidence exists to choose one direction.
Choose a useful message · 6 minutes
Learner picks a message for own reference or an imagined/willing audience: a warning against certainty, a conditional prediction or an unanswered question. The actual message construction is evidence; a planned audience's reaction is not. Credit precise source acknowledgement with ordinary words or a source ID.
Keep the reason · 4 minutes
Invite a one-component improvement to condition, evidence locator or uncertainty. Teacher uses the descriptive rubric for selected components only, noting actual assistance and missing opportunities.
Practical check: Sample one actual source-connected choice/reason in the chosen mode. Use Day 27 routes, two worked contexts and home/extra invitation only as useful.