分数记法

正确读、写并运用分数记法——分数、分子、分母、单位分数、非单位分数、真分数、假分数、带分数、等值分数、最简分数——并理解每个术语的含义，包括分子和分母在表示整体的一部分时各自的作用。

Read, write, and use fraction notation correctly — fraction, numerator, denominator, unit fraction, non-unit fraction, proper fraction, improper fraction, mixed number, equivalent fraction, simplest form — and understand what each term describes, including the roles of the numerator and denominator in expressing parts of a whole

学习证据 / Evidence

• 能指出并说出任意一个分数中的分子和分母，并解释它们分别表示什么。
• 能正确地将分数分类为单位分数、真分数、假分数或带分数，并为每一类举出一个例子。
• 能用自己的话解释为什么 2/4 和 1/2 是等值分数。

• Point to and name the numerator and denominator in any given fraction and explain what each tells you
• Correctly classify fractions as unit, proper, improper, or mixed number with an example of each
• Explain in own words why 2/4 and 1/2 are equivalent fractions

评估问题 / Assessment

如果{{name}}看到写下来的分数 3/4，能指出分子和分母，并解释每个数字实际表示什么吗？

If {{name}} saw the fraction 3/4 written down, could they point to the numerator and the denominator — and explain what each number actually means?