Percentages (age 9+)
Know and use the vocabulary of ratio and proportion — ratio, proportion, percentage, scale, equivalent, unequal, relative size, part-to-part, part-to-whole, and out of — and understand the difference between ratio (comparing parts to parts) and proportion (comparing a part to the whole)
Typical age: 9–11 years
“If your child is sharing something 3 ways and 2 ways, can they explain the difference between a ratio (like 3:2) and a proportion (like 3 out of 5) — showing they know what each word means?”
0 / 3 mastered
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Needs first
Nothing — this is a great starting point!
Unlocks next
- Scale and similar shapesREQUIRED
Similar shapes and scale requires 'scale', 'equivalent', and 'proportion' as defined terms
- Understanding fractionsREQUIRED
Unequal sharing problems require 'ratio', 'unequal', 'part-to-part', and 'proportion' vocabulary
- Ratio ProblemsREQUIRED
Solving relative sizes problems requires 'ratio', 'proportion', and 'relative size' as understood terms
- Calculating PercentagesREQUIRED
Calculating percentages of amounts requires 'percentage', 'proportion', and 'out of' vocabulary