Stage: 1 Challenge Level: 
Use some lolly sticks or headless matches to try out your
ideas.
What do you know about triangles?
What do you know about triangles?
Mixed triangles. Tangram. Investigations. Practical Activity. Matchsticks. Working systematically. Visualising. Compound transformations. Addition & subtraction. Interactivities.
Published July 1999.
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