# 1.2 Calculate perimeter and area of parallelograms & trapeziums

Can we choose our emotions or do they just happen?
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Slide 1: Mind map
MathematicsLower Secondary (Key Stage 3)

This lesson contains 21 slides, with interactive quizzes and text slides.

Lesson duration is: 60 min

## Items in this lesson

Can we choose our emotions or do they just happen?

#### Slide 1 -Mind map

Calculate perimeter and area of parallelograms & trapeziums

#### Slide 2 -Slide

timer
2:00
How do we find the perimeter of a shape?

#### Slide 3 -Mind map

Perimeter
The perimeter of a shape is determined by adding the length of all the sides and edges enclosing the shape.

#### Slide 4 -Slide

timer
2:00
How do we find the area of a shape?

#### Slide 5 -Mind map

Area
Area is calculated by multiplying the length of a shape by its width.

#### Slide 6 -Slide

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2:00
What is a parallelogram?

#### Slide 7 -Mind map

A parallelogram
A parallelogram is a special type of quadrilateral that has both pairs of opposite sides parallel and equal.

#### Slide 8 -Slide

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2:00
What is a trapezium?

#### Slide 9 -Mind map

Trapezium
A flat shape with 4 straight sides with exactly one pair of opposite sides parallel to each other. The parallel sides of a trapezium are called bases and the non-parallel sides of a trapezium are called legs.

#### Slide 10 -Slide

Calculate perimeter and area of parallelograms & trapeziums

#### Slide 11 -Slide

Perimeter of a parallelogram
timer
2:00

#### Slide 12 -Slide

Area of a parallelogram
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3:00

#### Slide 13 -Slide

Area of a trapezium/trapezoid
timer
5:00

#### Slide 15 -Slide

What is a parallelogram?

#### Slide 17 -Mind map

What is a trapezium?

#### Slide 18 -Mind map

I don't yet feel confident about...