Sixth Grade Poster Problem
Expressions and Equations
This problem helps to bridge the gap in student thinking from a concrete pattern or story to a generalized, abstract arithmetic expression or formula.
By the end of this problem, students will generate equations showing the number of toothpicks in a pattern that grows linearly. Since there are many ways to look at this problem, students might come up with equations that look different but actually result in the same values. When this situation happens, we say that the equations are equivalent. You have a vital role highlighting two important concepts: that equivalent expressions exist, and that we can simplify expressions.
Common Core State Standards for Mathematics:
The Lesson Plan:
Strategic Education Research Partnership
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