Compare vertices, edges, and faces

key notes :

🟢Basic Definitions:

• Vertices (Corners): The point where two or more edges meet.
  👉 Example: A cube has 8 vertices.
• Edges (Sides): The straight lines where two faces meet.
  👉 Example: A cube has 12 edges.
• Faces (Flat Surfaces): The flat parts or surfaces of a 3D shape.
  👉 Example: A cube has 6 faces.

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🟡Visual Identification:

Use 3D objects like cubes, cones, cylinders, spheres, pyramids, and rectangular prisms to point out:

• Corners (vertices)
• Sides (edges)
• Flat surfaces (faces)

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🔵Comparing Shapes:

Encourage students to compare different shapes:

Cube vs. Cone:

• Cube: 8 vertices, 12 edges, 6 faces
• Cone: 1 vertex, 1 edge (curved), 2 faces (1 flat circle + 1 curved surface)

Cylinder vs. Sphere:

• Cylinder: 0 vertices, 2 edges (curved), 3 faces
• Sphere: 0 vertices, 0 edges, 1 curved face

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🟣 Use of Math Vocabulary:

Practice using math terms like “more than”, “fewer than”, and “the same number of”.

• Example: A pyramid has fewer faces than a cube.
• Example: A cylinder has no corners.

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🔴Real-Life Connections:

Compare objects around them:

• Dice (cube) – has corners, edges, and flat faces.
• Ball (sphere) – no corners, no edges, just one curved face.
• Can (cylinder) – 2 flat faces and 1 curved face.

Learn with an example