负数
Negative Numbers
从零继续倒数,认识并包含负数
Count backwards through zero to include negative numbers
学习证据 / Evidence
- 从 5 倒数经过零:5、4、3、2、1、0、−1、−2……
- 在数轴上标出负数的位置
- 理解负数小于零,并能在实际情境(如温度)中使用负数
- 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)
评估问题 / Assessment
{{name}}能否从零继续倒数到负数,例如 3、2、1、0、−1、−2、−3,而不会在零这里停顿?
Can {{name}} count backwards past zero into negative numbers — like 3, 2, 1, 0, −1, −2, −3 — without hesitating at zero?