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  • Hands on Triangles for Boring Worksheet

    Hands on Triangles for Boring Worksheet

      A student came to me with a geometry worksheet, excerpt in photo above. Extemporaneously I created cut out sides of a triangle to help make the concept of lengths of sides of a triangle more concrete. The concept is that the shorter 2 sides must be longer than the 3rd side or you cannot…

  • Application for Trigonometry

    Making math meaningful and maybe interesting is a challenge. The photo above refers to a real life application for triangles and trigonometry (see photo below) that is found in a news story about Russian jets and a US destroyer. The jet was flying at an altitude of 100 yards and within 200 yards of the…

  • Cutouts for Area of Irregular Shapes

    Students have trouble with irregular shapes largely because they cannot visualize or determine the measures the dimensions of the individual parts. The photos below show a hands on activity to help students with these challenges. The students are cut out the individual shapes and write in the dimensions. This method allows them to see the…