数轴上的分数
Fractions on a number line
理解并运用位值来处理任意大小的整数、小数和度量；扩展数系，使所有正负整数、小数和分数都能放在同一条数轴上。
Understand and use place value for decimals, measures, and integers of any size; extend the number system to include all positive and negative integers, decimals, and fractions on a single number line
学习证据 / Evidence
- 识别任意大小的数（包括小数）中每一位数字的值。
- 将正整数、负整数、小数和分数放在数轴上。
- 运用位值在整个数系中比较和排列数字。
- Identify the value of any digit in numbers of any size including decimals
- Place positive and negative integers, decimals, and fractions on a number line
- Use place value to compare and order numbers across the full number system
评估问题 / Assessment
{{name}}能否把一组数——比如3、−2、0.5、−1.75和¼——都放在同一条数轴上，并按正确顺序排列？
Can {{name}} place a mix of numbers — like 3, −2, 0.5, −1.75, and ¼ — all on the same number line, in the right order?