Checking understanding of perimeter

Maths

Checking understanding of area

Multiplicative relationships in circles

Circumference of a circle

Area of a circle

Using the formula for the area of a circle

Area of composite shapes

Perimeter of composite shapes

Finding a length in composite shapes

Surface area of cuboids

Properties of prisms

Surface area of prisms

Surface area of cylinders

Volume of prisms

Volume of cylinders

Problem solving with perimeter, area and volume

In this unit, pupils have derived the formula for the circumference and area of a circle. In the future unit, this knowledge is combined with knowledge of fractions to find the arc length and area of a sector.

 In the prior unit, pupils learnt how to derive and use the formula for the area of a triangle and trapezium. In this unit, this knowledge is called upon to find the volume of different prisms and area of composite shapes.

In this unit pupils extend their knowledge of shapes by exploring the properties of circles and composite shapes before developing understanding of 3-D shapes including surface area and volume.

Perimeter, area and volume

The {{ }} is the distance around a 2D shape.

Which of the units could be used to measure perimeter?

When $$a = 5$$ the perimeter of the octagon is {{ }} mm.

The perimeter of the hexagon is 24 cm. Find the value of $$a$$.

The perimeter of the compound rectilinear shape is {{ }} cm.

Which of these units are a measure of length?

The image shows a wall whose length has been measured in four parts. The total length of the wall is {{ }} m.

A {{ }} shape is a shape created using two or more basic shapes.

Checking understanding of perimeter

Lesson outcome