Stage: 1 Challenge Level: 
Here is another triangular shape made from arranging circles.
Move just three of the circles so that the triangle faces in the opposite direction.
You could use this interactivity to try out your ideas:
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Tangram. Practical Activity. Addition & subtraction. Interactivities. Odd and even numbers. Compound transformations. Factors and multiples. Working systematically. Visualising. Games.
Published February 2001.
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