Area of a triangle

A complete lesson for introducing the area rule for a triangle.

Activities included:

Starter:
Questions to check pupils can find areas of parallelograms (I always teach this first, as it leads to an explanation of the rule for a triangle).

Main:

• A prompt to get pupils thinking (see cover image)
• Examples and a worksheet where pupils must identify the height and measure to estimate area.
• Examples and a worksheet where pupils must select the relevant information from not-to-scale diagrams.
• Simple extension task of pupils drawing as many different triangles with an area of 12 as they can.

Plenary:
A sneaky puzzle with a simple answer that reinforces the basic area rule.

Printable worksheets and answers included.

Please review it if you buy as any feedback is appreciated!