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This Linear Systems with Addition and Subtraction: XYZ Tiles interactive also includes:
Cover it up to reveal the values of variables. Using arrangements of colored tiles representing algebraic expressions, pupils layer them over each other to determine the values of variables. The procedure models the elimination method in solving linear systems.
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CCSS:
Designed
Concepts
Additional Tags
Instructional Ideas
- Have class members write the equations that result from layering the tiles
Classroom Considerations
- The class should be familiar with solving systems of linear equations with two variables
- Requires signing up for a free account to access the interactive
Pros
- Provides hints on how to get started
- Shows the correct answer if students give the wrong one
Cons
- The different colors of the layers are not always visible