Area of a Parallelogram
thingiverse
Prove to yourself that the area of a parallelogram is the base times the height. Here's an overview video: http://www.youtube.com/watch?v=wC8gYuBQaK4 Three puzzle sets are provided. Each set can be arranged to form the same rectangle and rearranged to form different parallelograms with the same area. Teachers: Have students follow the Exploration Guide (pdf file). It asks some good questions to get them thinking mathematically. Here are the Common Core standards associated with this manipulative: 3.MD.5, 3MD.8 and 4.MD.3 I've included the source files (SketchUp) in a zip archive. Instructions Print out the base container and the three puzzle sets and follow the exploration guide. Here are the colors I used in the video: BLACK: Base container (with white text, see below) ORANGE: Puzzle Set A YELLOW: Puzzle Set B GREEN: Puzzle Set C I don't have dual extrusion on my printer, so to get the white-on-black for the container, I started with black then paused the printing at 4mm and switched to white filament. Looking forward to learning how to make dual extrusion files soon. Note: If puzzle set C doesn't fit right, try the alternate version.
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