数轴上的分数
Fractions on a number line
能在真实情境、图形、数轴以及涉及乘法、分数和小数的符号算式之间流畅转换，并解释每种表示方式所表达的含义。
Move fluently between real-world situations, diagrams, number lines, and symbolic equations involving multiplication, fractions, and decimals, explaining what each representation shows
学习证据 / Evidence
- 将等分问题同时表示为分数示意图和除法算式。
- 解释 4 × 23 的条形模型与面积模型、笔算方法之间有什么联系。
- 将数轴上的一个小数转换为分数，并解释两者为什么相等。
- Represent a sharing problem as both a fraction diagram and a division equation
- Explain how a bar model for 4 × 23 connects to the area model and the written method
- Translate a decimal on a number line into a fraction and explain the equivalence
评估问题 / Assessment
当{{name}}解决涉及小数或分数的数学问题时，他们能否在分数条、数轴和书面算式之间切换，并解释每一种表示方式分别展示了什么？
When {{name}} works on a maths problem involving decimals or fractions, can they move between a fraction strip, a number line, and a written equation — explaining what each one is showing?