X07 · Motion clue, shape clue, missing clue

Complete source: Original fiction. A helper presses a folded tab toward a star. The tab shifts nearer and bends; at rest it remains nearer and bent. The record supplies no next attempt or measured force.

Own invitation: Put a clue in motion, shape or not supplied—or explain it in your own words.

Make or choose: Use three large labelled areas and the complete source. If making original cards, include the supplied resting position, supplied bend and unsupplied force; do not place them for the child.

Access choice: One card, a neutral scribe, spoken choices or familiar tactile symbols are sufficient. Multiple valid expressions are welcome.

Teacher notice and limit: Do not award practical operation for sorting fictional evidence. Observe the selected conceptual distinction.