User Manual

to provide an alternate way of thinking about

evaluating an expression for different values of

Here, an input of

= 1 gives an output of

= 1 + 3 = 4. Discuss that the expression,

+3, can

be thought of as the rule to find

. Later in the game,

the students will think backwards to guess the

"rule." If needed, discuss how students follow the

rules to their favorite board games. They need to

follow the rules in order to play. When they evaluate

an expression, they follow a rule to change one

number to another.

Set up the table on the calculator using the Auto

feature in o. Auto automatically sets up a table of

values to start at a given value and increment by a

value. To have the calculator create the same table of

values as above, set start at -2 and increment the

values by the step size of 1. Have students compare

their table done by hand against the calculator table.

Activity

Play one or two games of “Name that rule!” with the

whole class, using the rules on the next page. For the

whole class introduction of the game, the teacher

plays the role of the Ruler. This game uses o

and

the Ask-

feature on the TI-30XS MultiView™

calculator.

³ Hint: Copy the game sheets from the

student activity section for as many

games as needed.

Name that rule! (Continued)

³ Follow these steps:

1. Press p and set mode as shown.

2. Enter the expression y=x+3:

o z T 3 <.

3. Enter table setup values: M 2 $

$ $ <.

4. Use # and $ to scroll through

values of x and y = x + 3.