Focus: Find the area of triangles


How can I teach children how to calculate the area of triangles?

This lesson pack shows children, in a visual way, how they calculate the area of triangles. Children are given the formula to calculate the area of triangles and then shown through diagrams why this formula works. The lesson pack includes a lesson presentation, differentiated worksheets and a lesson plan. For those who have achieved the aim of the lesson, there is an optional extra challenge worksheet. This is the first in a series of three lessons on calculating the area of triangles and parallelograms, designed to meet the aims of the year 6 national curriculum for Maths.

How do you find the area of a triangle?

To find the area of a triangle, you need to know the length of its base (the ‘bottom’ of the triangle) and its height (the measurement from the base to the corner perpendicularly opposite it). Multiply the length of the base by the height, then divide by 2

View the presentation 


Extra challenge sheet 


For further help, watch the video below:

Maths Y6 Properties of Shapes: Parts of Circles

This lesson focuses on naming parts of circles, including radius, diameter and circumference and knowing that the diameter is twice the radius. This lesson teaches children to name and label the radius, diameter and circumference. It includes a lesson plan, presentation and worksheets.


Circle riddles


Extra challenge