1. Week 6 Mathsx

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Week 6 Maths
Area and Perimeter
3D Shapes
Try solving these anagrams – they
are all related to Area and Perimeter
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THELNG
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DITHW
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RIPMETREE
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AEAR
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RELATING
Try solving these anagrams – they
are all related to Area and Perimeter
•
THELNG = LENGTH
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DITHW = WIDTH
•
RIPMETREE = PERIMETER
•
AEAR = AREA
•
RELATING = TRIANGLE
Session Aims
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Define Area and Perimeter
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Calculate Area and Perimeter in a range of 2D shapes
 Including triangles
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Understand how to find the Area and Perimeter of compound shapes
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Test prior knowledge of 3D shapes by:
 Answering quiz questions
 Identifying edges, corners, and faces
 Drawing nets of 3D shapes
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What is Perimeter?
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What is Area?
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What is Perimeter?
 It is the distance around a 2D shape
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What is Area?
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What is Perimeter?
 It is the distance around a 2D shape
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What is Area?
 It is the amount of space inside a 2D shape
Calculating Perimeter
7m
3m
3m
7m
Calculating Perimeter
7m
3m
3m
7m
Just add all of the sides together: 7 + 7 + 3 + 3 = 20m
Calculating Area
7m
3m
3m
7m
Calculating Area
7m
3m
3m
7m
Multiply Length by Width: 7 x 3 = 21m²
Compound Shapes
•
Compound shapes are really just different rectangles joined together. Just
find the area of each part and then add them together.

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