🔢 Mathematics · Addition & Subtraction
Positive and Negative Numbers
Understand positive and negative numbers as describing quantities with opposite directions or values; use them in context such as temperature, floors in a building, and bank balances
Typical age: 11–13 years
“If your child sees temperatures like −3°C and +5°C on a weather forecast, can they figure out how much warmer one day is than the other — even when the answer crosses zero?”
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- Numbers on a number lineREQUIRED
Absolute value requires understanding negative numbers on a number line
- Sign Rules for MultiplicationREQUIRED
Multiplying/dividing negatives requires adding/subtracting negatives first
- Fractions on a number line (age 11+)REQUIRED
Ordering all number types (integers, decimals, fractions) on a number line extends the negative-number number-line representation