Ratio Notation and Relationships
Understand that a multiplicative relationship between two quantities can be expressed as a ratio; use ratio notation; simplify ratios
Typical age: 12–14 years
“Can your child explain why a ratio like 3:4 is really the same as the fraction ¾ — and show how that relationship connects to a straight-line graph through the origin?”
0 / 3 mastered
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Needs first
- Proportional Reasoning VocabularyREQUIRED
Multiplicative relationships require 'multiplicative relationship', 'direct proportion', and 'rate' vocabulary
- Proportion GraphsREQUIRED
Understanding multiplicative relationships as ratios or fractions is reinforced by the double number line and proportion graph
- Linear Function Graphs
Connecting ratios to linear functions links to understanding y = mx + c from algebra
- One Quantity as a FractionREQUIRED
Connecting ratios to fractions requires expressing quantities as fractions of each other
- Ratio NotationREQUIRED
Understanding multiplicative relationships requires fluent ratio notation