Problem Solving: Manual Mode - Texas Instruments TI-15 Teachers Manual

Problem Solving: Manual Mode

Keys
1. ‹ activates Problem Solving.
2. ‡ displays the menu for selecting
mode, level of difficulty, and type of
operation.
Mode: Auto
Display:
11-.
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.
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Notes
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 ‹.
TI-15: A Guide for Teachers
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