Angle Labundergrad · Anglelab: Measure the Angle
  1. Conjecture
  2. Manipulate
  3. Measure
  4. Explain
  5. Generalize
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Angle Lab

StudentChoose a mission, make a prediction, test the model, then explain the evidence.
TeacherLook for misconception tags, evidence-step completion, and transfer-readiness signals.

AngleLab

band 3-5 · mission — · seed —the turner · the protractor
Missions
Invariant witness
angle40°
arm length1.0x
degrees from directions40°
An angle is the amount of turn between two arms; the arms' lengths are not part of it.
0 events

A turner and a protractor

One arm sweeps from another. The degrees count as it turns. A slider changes the arm length but never the count. The protractor bench measures angles under a two-scale overlay. Commit a prediction before every measurement.

Choose a mission to open its prediction gate.

PredictTestExplainReviseDefendTransfer0/4 evidence steps