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# Noticing and comparing properties of shapes

Success in geometry depends on knowledge of two-dimensional and three-dimensional shapes along with an understanding of the properties of shapes and objects. Here, similarities and differences are important as students develop mathematical arguments about geometric relationships.

At most year levels, students can identify similarities and differences between shapes.

This activity focusses on noticing the similarities and differences in the properties of quadrilaterals. The activity could be used with any sets of two-dimensional or three-dimensional shapes.

Foundation Year: Sort, describe and name familiar two-dimensional shapes and three-dimensional objects in the environment

Year 1: Recognise and classify familiar two-dimensional shapes and three-dimensional objects using obvious features

Year 2: Describe and draw two-dimensional shapes, with and without digital technologies

Year 5: Describe translations, reflections and rotations of two-dimensional shapes. Identify line and rotational symmetries

Year 8: Define congruence of plane shapes using transformations

Year 8: Develop the conditions for congruence of triangles

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