Probability Labundergrad · Probabilitylab: Roll and Record
  1. Conjecture
  2. Manipulate
  3. Measure
  4. Explain
  5. Generalize
Ready

Math path

Probability 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.

ProbabilityLab

band 3-5 · mission — · seed —the spinner \u00b7 the coins
Missions
Invariant witness
spins kept—
red fraction—
memorynone, by construction
Every spin is drawn fresh from the same wheel; only long runs settle what short runs cannot.
0 events

The strip keeps everything

A wheel drawn at its true weights, a strip that keeps every outcome in order, and tallies that print counts and fractions. The engine has no memory, and this world exists to show you what that means. Commit a prediction before every set of spins.

Choose a mission to open its prediction gate.

PredictTestExplainReviseDefendTransfer0/4 evidence steps