Make sure to enter my giveaway that I posted about yesterday with three great prizes!
For a real stretch for elementary school kids you can show them that there are problems that take multiple steps to solve--theorems. A problem with all the steps completed make up a theorem. There is a theorem in geometry called the 'Japanese Theorem' (Thanks Wolfram mathworld for having an alphabetical glossary and explaining things simply).
This theorem states that if you draw the same circle but make triangles in the interior in any manner, then draw incircles to those triangles, the sum of the interior radiuses will always be the same (even if your triangles don't look the same as the others).
|Original picture on http://mathworld.wolfram.com|
'Til Monday! Have a great weekend!