Reflection: Grappling with Complexity Simplifying Linear Expressions by Combining Like Terms - Section 2: Guided Problem Solving


One thing I overlooked was that many students would not know how to handle a variable without a visible coefficient.  So when encountering 3x + x they would not know what to do.  It is a simple fix, but I think I should have made sure to mention that x means 1x.  Once this was explained, students were able to simplify with it.  To be even more clear I could remind students that 3x = x + x + x, therefore 3x + x = (x + x + x) + x = 4x.

  What do I do with that x?
  Grappling with Complexity: What do I do with that x?
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Simplifying Linear Expressions by Combining Like Terms

Unit 4: Expressions and Equations
Lesson 1 of 20

Objective: SWBAT simplify linear expressions by combining like terms

Big Idea: Students add 5 apples and 3 bananas to 6 apples and 2 bananas algebraically.

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Math, Expressions (Algebra), combining like terms, simplifying expressions, equation
  50 minutes
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