Starter quiz
- Tick all the polygons.
- A
- B ✓
- C
- D ✓
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- Match the image of the polygon to its name.
- A⇔triangle ✓
- B⇔octagon ✓
- C⇔quadrilateral ✓
- D⇔rectangle ✓
- Order the shapes from largest to smallest.
- 1⇔C
- 2⇔A
- 3⇔B
- True or false. The vertices of this polygon are all the same.
- True
- False ✓
- Compare these shapes. Which statements are true?
- They are both quadrilaterals.
- They are both polygons. ✓
- Shape B is taller than shape A. ✓
- They both have a wide vertex at top.
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- How would you describe the vertex that the arrow is pointing to?
- The vertex looks wide.
- The vertex looks sharp and pointy. ✓
- The vertex looks like a square corner.
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Exit quiz
- Which 3D shape could Jun have used to create this painting?
- Which 3D shape could Jun have used to create this painting?
- Which painting shows all the faces of this 3D shape?
- Which painting shows all the faces of this 3D shape?
- Which 3D shapes could Jun build with his construction materials?
- Match the 2D shape to the 3D shape that will be made once folded.
Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- 3D shapes can have flat faces. Each face is a 2D shape.
- 2D shapes can be folded and joined together to build 3D shapes.
Common misconception
Children may apply the names of 2D shapes to 3D shapes (such as square and cube).
Have examples of the confused 2D and 3D shapes (such as square and cube) for the children to handle and explore. Discuss what is the same and what is different about them.
Keywords
3d / three-dimensional - A shape with three measurable dimensions, e.g. width, height and depth.
2d / two-dimensional - A shape with only two measurable dimensions, e.g. width and length, but no thickness.
Face - The flat 2D surfaces of a 3D shape.
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