Reflection: Writing Across the Disciplines More with Adding and Subtracting Polynomials - Section 3: Closure


This ended up being a really interesting way to assess student understanding.  Students did really well with the first question.  Many students ended up giving examples like (x+y)+(w+z).  They were able to tell right away that all four terms had to be different if they were going to end up with four terms in the solution.  The second question gave students more to think about.  It was interesting to see how they rationalized that there could not be more than four terms when combining two binomials.  Several students summed it up very well saying something along the lines of, "there could be four terms or less but never more than four terms."  This type of thinking is abstract and often uncomfortable for students.  However, this type of generalization is very important to the discipline of mathematics.

  Designing a Polynomial
  Writing Across the Disciplines: Designing a Polynomial
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More with Adding and Subtracting Polynomials

Unit 4: Polynomial Expressions
Lesson 3 of 18

Objective: SWBAT add and subtract polynomial expressions.

Big Idea: This lesson allows students to work together in a cooperative structure to simplify polynomials and justify their reasoning.

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