Tuesday, October 14, 2014

4th grade Geometry - Area of Triangles

Today in class we extended last week's lesson on are to include the area of triangles.  One powerful moment for most of the students was the demonstration shown below.  This example visually shows how the formula makes sense and makes it more tangible for the students.

An extension you can try at home is to cut up some rectangles and rearrange the leftover pieces to make the triangle.




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