2D and 3D Shapes and Equal Shares

2D and 3D shapes for first grade: count sides and vertices, name shapes that are turned and stretched, sort triangles from look-alikes, split circles and rectangles into halves and fourths, and put two shapes together to make a new one.

• 9 worksheets + a 2D and 3D shapes reference page
• Halves, fourths and quarters with truly equal parts
• Answer key for every page

Grade

Grade 1

Full set

10 worksheets in color, the same 10 in black & white, answer key · 26 pages

Format

PDF, US Letter (8.5 × 11 in)

Standards

1.G.A.1Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.

1.G.A.2Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape.

1.G.A.3Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.

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