today we will be learning to make and describe 2-d shapes
TRANSCRIPT
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Today we will be learning
to make and describe 2-D shapes.
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Mental Activity
Can you identify these mystery shapes?
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Can you guess what this shape is?
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What about now?
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Equilateral triangle
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Can you guess this one?
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What about now?
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Here’s another clue.
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Regular pentagon
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Can you guess this one?
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What about now?
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Here’s another clue.
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Square
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Main Activity
Today we are going to revise and extend our work on 2-D shapes.
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What do we call any plane (2-D) shape with 3 sides?
A triangle
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What do we call any plane (2-D) shape with 4 sides?
A quadrilateral
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What do we call any plane (2-D) shape with 5 sides?
A pentagon
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What do we call any plane (2-D) shape with 6 sides?
A hexagon
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How many vertices does a shape with 4 sides have?
4
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How many vertices does a shape with 3 sides have?
3
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Shape Number of sides
Number of vertices
3 3
4 4
5 5
6 6
Can you see a pattern?
Look at this table.
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The number of sides and the number of vertices are equal.
Is this true for all 2-D shapes?
Why?
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Group Work
Make and name shapes.
Draw and label regular and irregular 2-D shapes.
Draw and label regular and irregular 2-D shapes with their lines of symmetry.