新一代科学标准（美国）
Grade 4
Grade 4共有 1 项标准，每项都有对应的免费练习单。 9–10 岁
说明是我们用自己的话写的简短概述，并非官方原文。
Life Science: From Molecules to Organisms: Structures and Processes
4-LS1-1
Argue from evidence that plants and animals have internal and external structures that help them survive, grow and reproduce.
现成的练习单