Invented Record A: known clean cloth, initially flat, left-to-right tabletop span 9 equal paper units. A fictional adult gives one half-turn twist. The recorded after-span is 3 units. Invented Record B: known smooth card, initially flat, span 7 equal units. A fictional adult gently curves it. The recorded after-span is 4 units. The same unit is stated. Claim to consider: Cloth is always better at changing shape than card.
What comparison can these invented records support? What prevents the always claim? Choose a question and make a clearer safe plan: name what changes, what should match and one unknown. You may use words, drawings, pointing or speech. No real handling is needed.
All literal after-spans are available for first response. Withhold only computed changes, interpretation and the separate worked key. A large paper representation may model these exact supplied records; it is not a cloth/card investigation.