C08 · Two starts and two helpers
Complete source: Original fiction. Helper Ari gives a paper piece an intended-little push from the drawn house; it rests near the star. Helper Bea gives another intended-little push starting already near the star; it rests near the square. The same mat is named, but travel measurements, exact contact strength and matched piece history are not supplied. The chosen question is whether Bea used greater force.
Own invitation: What makes this comparison insufficient for that strength question? Propose one useful matching step.
Worked possibility and a different next teaching invitation
Source-supported possibility: The same “little” label does not measure strength, and the starting positions/operators differ. End positions alone do not supply comparable travelled distances or isolate force. A useful new comparison can use one piece/start/direction and one agreeing operator with bounded intended actions, preserving variations.
Unknown/limits: Keep every missing force, path, future attempt, actual child operation and player response within this source’s stated limits. A complete fictional record is source evidence, not performed-investigation evidence.
Full next teaching: Use C07’s four complete same-start/one-operator records. Invite the child to name one relevant match and one remaining unmeasured detail. This different source supports a useful comparison while keeping actual force unknown.