Reflection: Developing a Conceptual Understanding Brainstorming Algebraic Expressions - Section 2: Investigation


I really like how this task shows students that some algebraic expressions have meaning and some don't.  I think too often students take what the book says at face value and don't think through what variables represent.  I like this task because it gives students the power to generate expressions that have meaning and they can also examine some that do not.  I think this is a key idea that is often overlooked in the Algebra 1.

  When an expression has no meaning
  Developing a Conceptual Understanding: When an expression has no meaning
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Brainstorming Algebraic Expressions

Unit 2: Multiple Representations: Situations, Tables, Graphs, and Equations
Lesson 5 of 17

Objective: SWBAT model real life situations with variables. SWBAT make sense of expressions written with variables. SWBAT determine when an expression does not have meaning.

Big Idea: Does this expression mean anything? Students create algebraic expressions from a given a table of variables and their definitions.

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4 teachers like this lesson
Math, Algebra, Graphing (Algebra), variable values, writing algebraic expressions, equation
  60 minutes
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