today we will be learning how to sort shapes using venn and carroll diagrams
TRANSCRIPT
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Today we will be learning
how to sort shapes using Venn and Carroll diagrams.
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Mental Activity
We are going to look at some 2-D shapes.
We will work out the number of sides and corners they have.
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What is the total of the sides of a triangle plus the corners of a square?
Multiply the number of sides of a hexagon by the number of sides of a
pentagon.
3 + 4 = 7
6 x 5 = 30
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How many sides do 2 pentagons and 2 octagons have altogether?
5 + 5 + 8 + 8 = 26
How many vertices do 6 rectangles have?
6 x 4 = 24
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How many right angles do 5 squares have altogether?
5 x 4 = 20
How many sides do 3 parallelograms have?
3 x 4 = 12
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Main Activity
Today we will sort objects
using Venn diagrams and Carroll diagrams.
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Here is a Carroll diagram.
straight sides not straight sides
four sides
not four
sides
Where should each
shape go?
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Here is a Carroll diagram.
straight sides not straight sides
four sides
not four
sides
Where will you put the
square?
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Here is a Carroll diagram.
Whataboutthe trapezium?
straight sides not straight sides
four sides
not four
sides
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Here is a Carroll diagram.
straight sides not straight sides
four sides
not four
sidesAndthe hexagon?
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Here is a Carroll diagram.
straight sides not straight sides
four sides
not four
sides
What about this
one?
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Here is a Carroll diagram.
straight sides not straight sides
four sides
not four
sides
And this
one?
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Here is a Carroll diagram.
straight sides not straight sides
four sides
not four
sides
Where will you put the
last shape?
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Can you see how the Carroll diagram works?
straight sides not straight sides
four sides
not four
sides
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Can you remember what a Venn diagram is?
four sides straight sides
We will use these groups.
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Sort these shapes using the Venn diagram.
four sides straight sides
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Where will the square go?
four sides straight sides
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What about the hexagon?
four sides straight sides
Why must the square go here?
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Where should we put the triangle?
four sides straight sides
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Where should the trapezium go?
four sides straight sides
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What about this four-sided shape?
four sides straight sides
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Where should we put the moon?
four sides straight sides
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Can you see how the Venn diagram works?
four sides straight sides
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Group Work
Draw Venn diagrams using the information on Carroll diagrams.
Sort shapes using either a Carroll or a Venn diagram.
Sort shapes using either a Carroll or a Venn diagram.