拼组图形
Composing Shapes
将二维图形（长方形、正方形、梯形、三角形、半圆形、四分之一圆形）拼组成组合图形，并能从组合图形中再拼组成新的图形。
Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, quarter-circles) to create composite shapes, and compose new shapes from the composite shape
学习证据 / Evidence
- 把两个三角形拼成一个长方形或更大的三角形。
- 把半圆形和四分之一圆形拼成圆形或其他新图形。
- 拆解一个组合图形，并描述它由哪些更简单的图形组成。
- Combine two triangles to form a rectangle or larger triangle
- Put together half-circles and quarter-circles to form circles or new shapes
- Decompose a composite shape and describe which simpler shapes make it up
评估问题 / Assessment
{{name}}能否使用三角形和长方形等平面图形拼在一起，组成一个更大的新图形——像拼图一样？
Can {{name}} use flat shapes like triangles and rectangles to fit together and make a new larger shape — like a puzzle?