Magazine article Mathematics Teaching

# Exploring Area and Fractions with Square Geoboards

Magazine article Mathematics Teaching

# Exploring Area and Fractions with Square Geoboards

## Article excerpt

Exploring Area and Fractions with Square Geoboards by Geoff Faux is reviewed by Joanna Alexander from Caversham Primary School. Association of Teachers of Mathematics, £22.00 (£16.50 to members of the ATM). Published on December 1st 2014, 978-1898611882.

What do you get if you cross triangles, fractions, area and a nine-pin geoboard? You get a series of engaging, interactive and successful lessons full of maths talk and enthusiasm. Exploring Area and Fractions with Square Geoboards is a fabulous book full of ideas for using a simple geoboard (or just nine dots arranged in a square on paper) to get children talking about and linking many different ideas of mathematics.

My Year 5 class started by exploring triangles, drawing as many different ones as they could. They then chose one to compare with their partner.

"What's the same and what's different?" was the question that I asked. The responses to that question really got the vocabulary flowing. I heard pupils using the following mathematical vocabulary: right angles; the same size; smaller; bigger; equal; acute angles; isosceles triangles; scalene triangles; different lengths; symmetrical. We explored this question with different pairs of triangles and shared some of the things we had noticed. These are some of the questions that came out of the discussion:

Why don't we have any triangles with two

obtuse angles?

Why don't we have any equilateral triangles?

Which types of triangles can be symmetrical? …

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