TI -15 Guia Do Utilizador

© 2000 T

EXAS 

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NSTRUMENTS 

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NCORPORATED

TI-15: A Guide for Teachers

Keys
1.

‹ activates Problem Solving.

2.  

‡ displays the menu for selecting
mode, level of difficulty, and type of
operation.

Mode:

Man (Manual)

Display:

In Manual mode, the student 
composes his or her own problems.

3.

 lets the student indicate a
missing element in Manual mode.

4.

Ž lets the student test
inequalities.

• 

The examples on the transparency
masters assume all default settings.

• 

Teachers can check a student’s
progress at any time by pressing

‡ to display the Scoreboard.
You can also press 

# to review

previous problems.

• 

When you first press 

‡, the

display shows the Scoreboard for a
moment before showing the menu.

• 

In Manual mode, for all operations
except inequalities, the calculator
accepts only integers.

• 

You can enter no more than 11
characters on the display.

• 

You can enter a problem that has
one solution, multiple solutions, or
no solution. For example:

1 solution:  2+5=?, 2+?=7, 2?5=7

 

Multiple solutions: ?+?=1, ?+?=6

 

0 solutions: 3P2=?
(Answer is not an integer.)

• 

When a problem has no solution,
the calculator will display “no” and
will continue to present the
problem until cleared manually.

• 

Problems with two missing
elements may have multiple
solutions. (?x?=24 has 8 solutions.)
They must be in the form of
?operator?=number.

• 

In Problem Solving, you can view the
history, but you cannot edit.

• 

To exit Problem Solving, press 

‹.

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