FIRST LEVEL THIRD LEVEL - blogs.glowscotland.org.uk · circle Success Criteria Be able to split the...
Transcript of FIRST LEVEL THIRD LEVEL - blogs.glowscotland.org.uk · circle Success Criteria Be able to split the...
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ROTHESAY ACADEMY
MATHEMATICS DEPARTMENT
FIRST LEVEL THIRD LEVEL
CIRCLEPATHWAY 1 BLOCK 4
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CIRCUMFERENCE
Learning Intention
Know how to calculate the circumference of a circle
Success Criteria
Successfully use the circumference formula
Show all the correct working
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The diagram shows all the key parts of a circle.
CIRCLE
Diameter
Radius
Circumference
Diameter = 2 x Radius
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The circumference of a circle is the perimeter of a circle. It can be
calculated by using the formula of 𝐶 = 𝜋𝑑, where 𝜋 = 3.141592…
CIRCUMFERENCE OF A CIRCLE
Calculate the circumference of these circles
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NOW YOUR TURN
TeeJay Level F
Page 118
Exercise 1 Q1 – Q7
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PERIMETER OF COMPOSITE SHAPES
Learning Intention
Know how to calculate the perimeter of a shape that includes
part of a circle
Success Criteria
Be able to split the shape into known shapes
Show all appropriate working
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To calculate the perimeter of a composite shape we split the shape
into “known” parts, usually dealing with the straight and curved
parts separately.
PERIMETER OF COMPOSITE SHAPES
Calculate the perimeter of this shape
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NOW YOUR TURN
TeeJay Level F
Page 119
Exercise 1 Q8 – Q13
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CIRCUMFERENCE – WORKING BACKWARDS
Learning Intention
Know how to calculate the radius or diameter of a circle when
given the circumference
Success Criteria
Successfully use the circumference formula
Show all the correct working
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We can use the circumference formula to calculate the diameter
(or radius) if we know the circumference.
CIRCUMFERENCE OF A CIRCLE
Calculate the diameter
of these circles
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NOW YOUR TURN
TeeJay Level F
Page 121
Exercise 2
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AREA OF A CIRCLE
Learning Intention
Know how to calculate the area of a circle
Success Criteria
Successfully use the area formula
Show all the correct working
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The area of a circle is calculated by using the formula 𝐴 = 𝜋𝑟2
AREA OF A CIRCLE
Calculate the area of these circles
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NOW YOUR TURN
TeeJay Level F
Page 123
Exercise 3 Q1 – Q5
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AREA OF COMPOSITE SHAPES
Learning Intention
Know how to calculate the area of a shape that includes part of a
circle
Success Criteria
Be able to split the shape into known shapes
Show all appropriate working
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To calculate the area of a composite shape we split the shape into
“known” parts, dealing with each shape separately.
AREA OF COMPOSITE SHAPES
Calculate the area of these shapes
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NOW YOUR TURN
TeeJay Level F
Page 125
Exercise 4
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CIRCLE SUMMARY
Calculate the diameter of
these circles
Calculate the
circumference and area of
these circles
Calculate the perimeter and area of this shape