H08 · Compare the question you actually want

Complete source: Original fiction. A paper gate and a familiar cloth gate have the same broad outline. Both begin flat on the same mat; one helper lifts the same chosen edge to an intended similar low height once for each. The paper rests with a higher bend and the cloth with a lower bend. Force was not measured.

Own invitation: If the question is about changing the material, what was intended to stay alike? What is a limit of this pair?

Wanted practical offer: Use the fiction, or choose one locally suitable broad material and a wanted question. Trying two materials is optional and does not show that every setup was matched. No material purchase or home report.

Complete alternative and access: Lay out large “alike”, “changed” and “not supplied” places, speak them, or let the child choose one matching detail.

Notice and next: One each cannot settle all materials or every force. An action question and a material question may need different matches.