🔢 Mathematics · Probability
The 0-to-1 Probability Scale
Understand probability as a measure expressed as a number between 0 (impossible) and 1 (certain); place events on the probability scale; express probabilities as fractions, decimals, and percentages
Typical age: 10–11 years
“Can your child write the same probability as a fraction, a decimal, and a percentage — for example, knowing that an even chance is ½, 0.5, and 50%?”
0 / 3 mastered
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Needs first
- Probability as a FractionREQUIRED
The formal 0-1 probability scale formalises the fractional representation of equally-likely outcomes introduced at age 9-10
- Comparing fractions
Expressing probability as fractions, decimals, and percentages requires comparing and ordering fractions — a skill built in the Fractions domain