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A Symmetry Mini-Investigation

Published 12 months ago by Ann Baker


This investigation is inspired by the beautiful book Seeing Symmetry by Loreen Leedy. I really enjoyed the book and use it as a springboard into mini paper-folding symmetry investigations.

seeing-symmetry-book

Often students can identify lines of symmetry when they are presented to them but have had limited experiences with deliberately planning folds and cuts to create symmetrical shapes.
Visualisation is central to spatial awareness and spatial sense.

Paper folding and cutting will provide experiences for students to:

Have a look at these examples that the investigations generated.

The idea is to start with the simple challenge of making one fold and cutting out a shape. At each stage, ask the children to predict what the cut-out shape will be and to name it if possible.

seeing-symmetry1

You'll see that I've used paper from an old fashion magazine. Well trends change, so there's no need to be looking back to the nineties for what to wear today!

I also quite liked the textures that the pages made.

The second stage is to make a second fold before you cut and this time, the shapes start to get quite complex.

seeing-symmetry2

I made this one up as a symmetry puzzle, with the folded paper stuck onto the sheet so that it could be opened up, one fold at a time.

And then there were three. This is my Sting in the Tail and it makes a great context for both naming strange shapes as well as looking for lines of symmetry.

seeing-symmetry3

At the end of the day, the resources are very simple and yet the outcomes are rigorous and educational valuable.

There is a sort of Arvind Gupta feel to the investigations - and if you haven't met Arvind yet, click here to see a little bit of educational magic, making toys from trash - inspiring!

Looking for more ideas? Practical help to make your maths lessons/numeracy blocks as effective as possible? Check out our new online courses here.

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