代数记法
Algebraic Notation
使用并解释代数记法，包括：ab 表示 a × b，3y 表示 y + y + y，a² 表示 a × a，a/b 表示 a ÷ b，系数为分数，以及用括号进行分组；能够流畅地读写代数表达式。
Use and interpret algebraic notation including: ab for a × b, 3y for y + y + y, a² for a × a, a/b for a ÷ b, coefficients as fractions, and brackets for grouping; read and write algebraic expressions fluently
学习证据 / Evidence
- 使用标准的代数约定阅读并解释涉及乘法、除法和幂的表达式
- 能用正确记法从文字描述中写出代数表达式
- 理解字母并排书写表示乘法，且 a/b 表示 a 除以 b
- Read and interpret expressions using standard algebraic conventions for multiplication, division, and powers
- Write algebraic expressions from word descriptions using correct notation
- Understand that juxtaposition means multiplication and that a/b means a divided by b
评估问题 / Assessment
当 {{name}} 在数学题中看到像“3y”或“a²”这样的简写符号时，他们知道这些符号的含义并能够运用它们吗？
When {{name}} sees something written as "3y" or "a²" in a maths problem, do they know what those shorthand notations mean and can they work with them?