The Probability Scale
Understand probability as a measure on a scale from 0 (impossible) to 1 (certain); use the language of probability including likely, unlikely, certain, and impossible
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Check understanding
- Place everyday events on a 0-to-1 probability scale with justification
- Explain why a fair six-sided die gives each number a probability of 1/6
- Distinguish between equally likely outcomes (fair coin) and unequally likely outcomes (biased spinner)
“Can your child explain that probability goes from 0 (impossible) to 1 (certain), place events on that scale as numbers, and tell you whether a game is fair or not?”
Curriculum record
- Type
- Conceptual
- Subject
- Mathematics
- Domain
- Probability
- Age range
- Ages 11–13
Standards