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Two Washers
Source Institutions
In this activity, learners create a mind and math puzzle that requires a three-dimensional solution.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-785.gif?itok=oVx2aChU)
Laser Lissajous: PVC Version
Source Institutions
In this activity, learners use a laser pointer and two small rotating mirrors to create a variety of fascinating patterns, which can be easily and dramatically projected on a wall or screen.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-786.gif?itok=_W-FGo6g)
Laser Lissajous: Binder Clip Version
Source Institutions
In this activity, learners use a laser pointer and two small rotating mirrors to create a variety of fascinating patterns, which can be easily and dramatically projected on a wall or screen.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-695.jpg?itok=AXdrDVk6)
Games of Chance and Brains
Source Institutions
In this activity, learners build and play three math games. In the first game, called "Switcheroo," learners place marbles in holes 1 through 4 and 7 through 10.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-703.jpg?itok=a-s5mTFc)
Topological Puzzles
Source Institutions
In this activity, learners construct three math puzzles out of simple materials like wood, string, and Styrofoam.