Chapter 4: Linear Inequalities Section 1: Using Graphs & Tables
Topics in Algebra 1 © 2001 Texas Instruments Teacher Notes 4-8
Activities
Scoring
: There are five
problems in each set.
Students get two attempts
to solve for
x
for each
problem. You get 2 points
for a correct choice on the
first try, and 1 point for a
correct choice on the
second try.
Students can earn up to
10 points.
Build the Solution Set!
Tell students to:
1. Use
!
or
"
to move the cursor along the number line. Press
b
to select the first point to test. The point is displayed
along with the result of the test.
2. Choose another point to test. After the point and result of the
test for the second point are displayed, four possible solutions
for
x
are displayed.
3. Press
!
or
"
to highlight the correct solution, and then press
b
to select it. If students choose an incorrect solution on
the first try, they get another try. If they choose an incorrect
solution on the second try, the correct answer is displayed.
Students can press any key to go to the next problem. As they
play the activity, they should write the inequalities and their
solutions.
4. Record their scores.
Note
: Students can press
|
or
~
to leave this
screen.
Worksheet Activity 1
Tell students to:
1. Use number sense to estimate the solution set for the
following three inequalities on the number lines provided.
2. Place the appropriate scale on each number line so that they
are able to show the solution set appropriately.
3. Check several points as shown in the activity above.
4. Show all of their work.
1.
x + 2.5 < 7
when
x < 4.5
2.
x
N
3.6
M
2
when
x
1.6
3.
x +
3
4
> 4
1
8
when
x > 3
3
8
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