User Manual

Overview

Students guess the algebraic expression (function)

from a table of values in a game format. Students use

o on the TI-30XS MultiView™ calculator to enter an

expression as a function (y=) in order to play the game.

Math Concepts

•algebraic

expressions

• functions

Materials

• TI-30XS MultiView

• pencil

• student activity

• strips of paper

and paper bag

Introduction

Students will warm up for this activity by evaluating

expressions and filling out a table of values. They

then play a game, "Name that rule!" The game uses

the TI-30XS MultiView calculator to create a table of

values.

Have students fill out the following tables which

appear on the student sheet.

Note

NoteNote

Note: Consider varying the variable letter in the

warm up. The variable on the calculator, however,

will always be x.

*The students should notice that the tables for 2x + 6

and 2(x + 3) are the same. Discuss why these are

equivalent expressions and verify this by using the

Distributive Property of Multiplication over

Addition. You can also have students use tiles to

display the area model, 2(x + 3) = 2x + 6.

Show the students how to enter the expression in

o on the TI-30XS MultiView. They enter the

expression as a function. This may be a new concept

for your students. If needed, use a function machine

+ 3

+ 6 2(

+ 3)*

-2 1 -2 2 2

-1 2 -1 4 4

03 06 6

14 18 8

25 210 10

Name that rule!