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Here are some specific activities, investigations or visual aids we have picked out. Click anywhere in the grey area to access the resource.

• Scale Factors Video The scale factor, area factor and volume factor of similar shapes are quite different.
• Similar Shapes Questions about the scale factors of lengths, areas and volumes of similar shapes.

Here are some exam-style questions on this statement:

• "A triangle, ABC, is drawn (not to scale) with AC = 12.6 cm." ... more
• "The two shapes are mathematically similar." ... more

See all these questions

Click on a topic below for suggested lesson Starters, resources and activities from Transum.

• Enlargements When areas and volumes are enlarged the results are far from intuitive. Doubling the dimensions of a rectangle produces a similar shape with four times the area! Doubling the dimensions of a cuboid produces a similar shape with eight times the volume! The activities provided are intended to give pupils experiences of dealing with enlargements so that they better understand the concept and are able to produce diagrams, make models and answer questions on this subject. Once positive integer scale factors have been mastered the notion of fractional and negative scale factors await discovery!