Compound Events, Sample Spaces, and Tree Diagrams
Compound Events, Sample Spaces, and Tree Diagrams practice with teacher guidance, common slips, and next-step routes.
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Print: Ages 13–15 · 3–5 min · Transfer · Conditional Probability · Independent practice · Exact comparison
Watch: Watch whether the learner enters both exact probabilities before choosing an action. A correct choice is decisive only when Reset is paired with 1/3 and Advance with 1/4.
Misread: A learner who uses 2/5 for Reset has removed the observed blank; a learner who uses 1/2 for Advance has counted two favorable blank positions instead of one.
Curriculum: This task compares two conditional chance models: a fresh uniform reset and a one-step transition after a published blank. It scores exact finite-sample-space probabilities and a justified comparison.