Education Technology

Variables and Expressions

Subject Area
Math: Algebra I: Equivalence
Level
9-12
Activity Time
45 Minutes
TI Calculator
TI-Nspire™ CX/CX II
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire™
TI-Nspire™ CAS
TI-Nspire Version
3.0
Resource Types
Lessons
Format
TNS

Variables and Expressions

Activity Overview

Change the value of x on a number line and see the effect on an algebraic expression.

Objectives

  • Students will evaluate an expression.
  • Students will recognize the effect of changing a variable on the value of an expression.
  • Students will relate the change in the value of an expression to the symbolic representation.

Vocabulary

  • Expression
  • Variable
  • Coefficient

About the Lesson

  • This lesson introduces the concept of variable and the role of variables in simple mathematical expressions.
  • Students move a point along a number line and observe changes in the values of an expression. They are asked to connect the changes in the values to the coefficient of the variable term in the expression.

Subject Area
Math: Algebra I: Equivalence
Level
9-12
Activity Time
45 Minutes
TI Calculator
TI-Nspire™ CX/CX II
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire™
TI-Nspire™ CAS
TI-Nspire Version
3.0
Resource Types
Lessons
Format
TNS
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