Solving a System of Linear Equations: Escape from the Tomb
From NCTM "Illuminations". Detailed lesson plan for hands-on activity that can be solved experimentally and by solving a system of linear equations. Two bowls are suspended from the ceiling by springs. One bowl is lower than the other. In one bowl, you can only place marbles; in the other bowl, you can only place bingo chips. Students must determine how many items must be placed in each bowl so that the heights of the bowls are the same. Requires some setup and materials. Resource includes instructor materials and well-designed students worksheets to accompany the project. Students represent the problem physically,symbolically and by using a table. Exact solution requires solving a system of linear equations.
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