[IAEP] 40 maths shapes challenges

[Bill Kerr]

Image attached
Forty shapes to make in Scratch <http://scratch.mit.edu/> or some other
version of logo, such as Turtle
Art<http://wiki.sugarlabs.org/go/Activities/Turtle_Art>.
It's hard to see the thumbnail but click on it for a larger view.

This is one of the best sheets ever for teaching maths (designed by Barry
Newell):

   - the logo turtle or scratch cat acts as a transitional object between
   the concrete maths shape and the abstraction of the script that makes the
   shape
   - the sheet includes both simple and complex shapes, increasing in order
   of complexity, there is a challenge there for everyone
   - many of the more complex shapes are made up of combinations of the
   simpler shapes

Source: Barry Newell's Turtle Confusion (1988)
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