Time Money Units

StudentChoose a mission, make a prediction, test the model, then explain the evidence.

TeacherLook for misconception tags, evidence-step completion, and transfer-readiness signals.

Missions

Invariant witness

domain—

clock—

carry—

Every quantity is a count of a stated unit; converting changes the count, never the amount.

0 events

A clock, a till, and a conversion bar

Minutes carry at 60, not 100. Coins carry printed values; more coins can mean less money. A conversion bar counts the same length in two units. Commit a prediction before every run.

A clock, a till, and a conversion bar

Minutes carry at 60, not 100. Coins carry printed values; more coins can mean less money. A conversion bar counts the same length in two units. Commit a prediction before every run.

Choose a mission to open its prediction gate.

PredictTestExplainReviseDefendTransfer0/6 evidence steps