In this lesson, children extend their knowledge from working out the area of a right-angled triangle to working out the area of any triangle. They still use the same formula to do this. They will also use this to work out the shape of composite shapes made up by more than one triangle. This resource teaches the students to use the formula for the area of a rectangle to find the area of a right-angled triangle. There is a teaching presentation and three levels of worksheets (working towards, expected and greater depth) with a range of fluency, reasoning and problem solving questions.

National Curriculum Objectives:
Mathematics Year 6:

recognise that shapes with the same areas can have different perimeters and vice versa
calculate the area of parallelograms and triangles

Differentiation:
There are three levels of differentiation in this pack: ‘working towards,’ ‘expected’ and ‘greater depth’.

Level of this Pack:
Age: 10-11
 England & Wales: Year 6
 Scotland: Primary 6
 Rep. Ireland: Fifth Class
 Australia: Grade 5
 USA: Grade 5
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