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What's your angle?

Published 8 months ago by Ann Baker


Thank you for the big response to our last blog post about strategy mats and questions about the other mats. Today we have chosen to look at the Angles and Triangles strategy mat.

The Angle strategy mat shown below was designed after watching a lesson intended to teach students how to use a protractor.

Angles Mat1

Most of the students had no idea how to line up the protractor, what they were actually trying to measure or what a realistic measurement of an angle actually would be.

It has long been a belief of ours that mathematics can be generative. What we mean by this is that once the underlying concept or principles of a concept are understood then that understanding can be used to extend thinking and practically generate the next developmental step.

Essentially, this means that the teacher notices what the students do know and can do and comes behind to build and extend those understandings.

We recommend building these understandings with the support of strategy mats - in that case an angles one.

Side 1 of the Angles and Triangles mat has been designed to structure a deeper understanding of angles and turns as well as combining use of angles with mapping and alpha numerical grids. The accompanying teacher booklet provides mental routines games and activities to deepen understanding about angles and how to measure them so that using a protractor correctly is achieved.

Side 2 of the mat shows the key words associated with triangles and gives a grid on which triangles can be drawn.

Angles Mat2

The teacher notes for Side 2 include a mental routine to consolidate the vocabulary of triangles and a strategy lesson based on making different triangle shapes by folding a piece of paper.

Find our low cost classroom 'Angle Mat' resource (and others) here.

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