百分比（9岁及以上）
Percentages (age 9+)
知道并会运用比和比例的相关词汇：比、比例、百分比、比例尺、相等、不相等、相对大小、部分与部分、部分与整体以及“在……中占”；理解比（比较部分与部分）和比例（比较部分与整体）之间的区别。
Know and use the vocabulary of ratio and proportion — ratio, proportion, percentage, scale, equivalent, unequal, relative size, part-to-part, part-to-whole, and out of — and understand the difference between ratio (comparing parts to parts) and proportion (comparing a part to the whole)
学习证据 / Evidence
- 用混合颜料等具体例子解释“比”和“比例”的区别
- 在具体情境中正确使用“百分之几”，并在分数、小数和百分数之间进行换算
- 定义“比例因子”，并用它描述图形是如何放大或缩小的
- Explain the difference between a 'ratio' and a 'proportion' using a concrete example like mixing paint
- Use 'per cent' correctly and convert between fractions, decimals, and percentages in context
- Define 'scale factor' and use it to describe how a shape has been enlarged or reduced
评估问题 / Assessment
如果{{name}}要把某物按3份和2份来分，能解释比（如3:2）和比例（如5份中的3份）之间的区别，并说明自己知道这两个词各自的含义吗？
If {{name}} is sharing something 3 ways and 2 ways, can they explain the difference between a ratio (like 3:2) and a proportion (like 3 out of 5) — showing they know what each word means?