February NO PREP Packets! - Free Printable

Problem Explanation:

This worksheet is designed to help students distinguish between 2D (two-dimensional) and 3D (three-dimensional) shapes. The instructions are:

- Color 2D shapes green
- Color 3D shapes blue

We need to identify each shape in the image as either 2D or 3D, then assign the correct color based on the code.

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Step-by-Step Solution:

#### 🔹 Understanding 2D vs 3D Shapes:

- 2D Shapes: Flat shapes with only two dimensions — length and width. Examples: circle, triangle, square, rectangle, hexagon, oval.
- 3D Shapes: Solid shapes with three dimensions — length, width, and height. Examples: cube, cylinder, sphere, cone, pyramid, rectangular prism.

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Identify Each Shape and Color Accordingly:

Let’s go through each shape one by one:

1. Parallelogram → 2D → ✔ Green
2. Cube → 3D → ✔ Blue
3. Hexagon → 2D → ✔ Green
4. Triangular Pyramid (Tetrahedron) → 3D → ✔ Blue
5. Sphere → 3D → ✔ Blue
6. Trapezoid → 2D → ✔ Green
7. Oval → 2D → ✔ Green
8. Cylinder → 3D → ✔ Blue
9. Cylinder → 3D → ✔ Blue
10. Triangle → 2D → ✔ Green
11. Pentagon → 2D → ✔ Green
12. Rectangle → 2D → ✔ Green
13. Rectangular Prism → 3D → ✔ Blue
14. Diamond (Rhombus) → 2D → ✔ Green
15. Rectangular Prism (long) → 3D → ✔ Blue
16. Circle → 2D → ✔ Green
17. Cube → 3D → ✔ Blue
18. Rectangle → 2D → ✔ Green
19. Square → 2D → ✔ Green
20. Cylinder (lying down) → 3D → ✔ Blue

> Note: Some shapes like the cylinder, cube, and prism appear multiple times.

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Final Answer Summary:

| Shape | Type | Color |
|------|------|-------|
| Parallelogram | 2D | Green |
| Cube | 3D | Blue |
| Hexagon | 2D | Green |
| Triangular Pyramid | 3D | Blue |
| Sphere | 3D | Blue |
| Trapezoid | 2D | Green |
| Oval | 2D | Green |
| Cylinder | 3D | Blue |
| Cylinder | 3D | Blue |
| Triangle | 2D | Green |
| Pentagon | 2D | Green |
| Rectangle | 2D | Green |
| Rectangular Prism | 3D | Blue |
| Rhombus | 2D | Green |
| Rectangular Prism | 3D | Blue |
| Circle | 2D | Green |
| Cube | 3D | Blue |
| Rectangle | 2D | Green |
| Square | 2D | Green |
| Cylinder | 3D | Blue |

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✔ Instructions for Coloring:

- Color all flat shapes (2D) green:
- Parallelogram, Hexagon, Trapezoid, Oval, Triangle, Pentagon, Rectangle, Rhombus, Circle, Square

- Color all solid shapes (3D) blue:
- Cube, Triangular Pyramid, Sphere, Cylinder, Rectangular Prism, Cylinders (all)

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📌 Final Tip:

When coloring:
- Look for flat outlines → 2D → green
- Look for depth, shading, or faces → 3D → blue

This activity helps build spatial awareness and understanding of geometry fundamentals.

Let me know if you'd like a printable version or a colored example!