Explain how to calculate the area of a parallelogram

Maths

In this unit pupils will explain how to calculate the area of a parallelogram and a triangle describing the relationship between scale factors and side lengths. They will describe positions in all four quadrants drawing and translating simple shapes and reflecting them in the axes In the future unit pupils extend their knowledge of plotting coordinates by now plotting non-integer values.

In the prior unit pupils used knowledge of shape properties to draw, sketch and identify shapes. In this unit pupils will explain how to calculate the area of a parallelogram and a triangle. They will describe the relationship between scale factors and side lengths of two shapes. They will describe positions in all 4 quadrants drawing and translating simple shapes and reflecting them in the axes.

Area, perimeter, position and direction

Which line is the base of the parallelogram? 

Which line is the perpendicular height of the parallelogram? 

What is the formula for the area of a parallelogram?

What is the area of the parallelogram? {{ }} cm².

A parallelogram has a base length of 10 cm and a perpendicular height of 3 cm. What is the area of the parallelogram? {{ }} cm².

A parallelogram has a base length of 6 cm and a perpendicular height of 4 cm. What is the area of the parallelogram? {{ }} cm².

Opposite sides are parallel to each other. 

All of the interior angles are always different to each other. 

Which of the statements is true for parallelograms? 

The shape on the left is a parallelogram but the shape on the right is not.

The shape on the right is a parallelogram but the shape on the left is not.

Number rods have been used to make shapes. Tick the statement that is true.

‘A square is a parallelogram’. Is this statement:

The two shapes have the same side lengths as each other. 

This lesson will soon be taken down.

Explain how to calculate the area of a parallelogram

Lesson outcome