3D Shapes: Year 4 Explorer
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3D Shapes: Year 4 Explorer
Discovering the world of three-dimensional shapes Learning about prisms, pyramids, and other solids Understanding properties and attributes
What are 3D Shapes?
3D shapes are solid objects with length, width, and height They take up space in the real world We can hold them and walk around them Different from flat 2D shapes
Cube
6 square faces that are all the same size 12 edges (lines where faces meet) 8 vertices (corners where edges meet) All edges are the same length
Rectangular Prism (Cuboid)
6 rectangular faces 12 edges of different lengths 8 vertices Opposite faces are identical rectangles
Triangular Prism
2 triangular faces (bases) 3 rectangular faces (sides) 9 edges total 6 vertices
Cylinder
2 circular faces (top and bottom) 1 curved surface connecting the circles No edges or vertices Rolls smoothly
Cone
1 circular face (base) 1 curved surface that comes to a point 1 vertex at the top No edges
Sphere
1 curved surface all around No faces, edges, or vertices Perfectly round in all directions Rolls in any direction
Square Pyramid
1 square base 4 triangular faces meeting at the top 5 faces total 8 edges and 5 vertices
Triangular Pyramid (Tetrahedron)
4 triangular faces 6 edges 4 vertices All faces are triangles
Shape Detective Challenge
Look around the classroom Find one example of each 3D shape Draw or write what you found Share your discoveries with a partner
Prisms vs Pyramids
{"left":"Prisms have two identical end faces\nPrisms have rectangular side faces\nExamples: cube, rectangular prism, triangular prism","right":"Pyramids have one base\nPyramids have triangular faces meeting at a point\nExamples: square pyramid, triangular pyramid"}