Goal/materials: carry source reasoning into a labelled invented science caption; Card D and science model.
- Notice, 3: Read Card D's first sentence. Key: invented model assigns 100 J input and 60 J useful light output.
- Model, 5: “The second sentence says no energy goes elsewhere. That does not follow: 40 J remains to be accounted for as other transfers in the model. I will not claim we measured a real lamp.” Distinguish model data from observation.
- Guide, 7: Pairs underline numerical statement, unsupported inference and missing 40 J. Use the original energy-flow diagram/text as a second source, with source status named.
- Try, 7: Learner revises the caption fairly in two sentences, naming input, useful output and other transfer. Sample key: “Our fictional model has 100 J input and 60 J useful light; it assigns 40 J to other transfers. A measured lamp would need sourced data.”
- Check, 3: “Does the model show a real device's efficiency?” Key: no, the values are invented. Next: put
modelbeside each number before inference.