User Manual

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© 2006 TEXAS INSTRUMENTS INCORPORATED TI-30XS MultiView: A Guide For Teachers 25
Problem
We follow rules every day. Can you follow the rules to your favorite board game? Do you have
to carefully follow the rules to play? We also follow rules when we work with numbers and
expressions.
Example: If
x = 1, then x + 3 = 1 + 3 = 4
The expression
x + 3 has one variable, x . Depending on the value of x , x + 3 will be equal to
different numbers. You can think of
x + 3 as a rule. Fill out the following table to warm up.
The values of
x have been picked for you.
1. What do you notice about the table for 2
x + 6 and 2( x +3)?
2. Check the tables above using o on the TI-30XS MultiView™ calculator.
3. Play the game "Name that rule!", using the game sheet on the next page. In this game,
you will not know the expression (rule). You will have to guess the rule by thinking
backwards! Your teacher will give you the instructions to play.
xx + 3 x 2 x + 6 x 2( x + 3)
-2 -2 -2
-1 -1 -1
000
111
222
Name that rule!