Working out the formula for triangular numbers
Top set Y6. Showing how to work out the formula for the triangular numbers from a simple visual stimulus. All of the set could explain in words the formula and most could write it down. They remembered it afterwards too!! Feel free to alter the initial slides for you class.

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Created: May 26, 2011

Updated: Jan 20, 2015

ppt, 158 KB

triangular numbers

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Creative Commons "Sharealike"