Mathematics
Number Representation & Place Value
Conceptual
8–9 yrs
Negative Numbers
负数
Description
Count backwards through zero to include negative numbers
Mastery Evidence
- Count backwards from 5 through zero: 5, 4, 3, 2, 1, 0, −1, −2 …
- Place negative numbers on a number line
- Understand that negative numbers are less than zero and use them in context (e.g. temperature)
Assessment Prompt
Can your child count backwards past zero into negative numbers — like 3, 2, 1, 0, −1, −2, −3 — without hesitating at zero?
Prerequisites 1
Counting Within 1,000
跨越零的倒数延伸了1000以内的倒数能力
Unlocks 1
Negative numbers in context
