Chapter 3: Linear Functions Section 1: Slope with Grid
Topics in Algebra 1 © 2001 Texas Instruments Teacher Notes 3-8
Observations
The
Observations
help students understand the slope of a straight line.
If necessary, tell students how to find the
Observations
for this section.
Observation 1
Students write what they observe about the slope of straight lines.
Answers may vary. Students observe that a line has constant slope.
Activities
Scoring
:
Students get
two attempts to solve
each problem. They earn
2 points for a correct
answer on the first try, 1
point for a correct answer
on the second try.
Students can earn up to
10 points.
Screen Cross
Tell students to:
1. Read the directions on the screen, and then press any key to
continue.
Note
: Repeat steps 2 and 3 for line segments 2 through 5.
2. Calculate the slope between the two endpoints. Record their
work.
3. Press
$
or
#
to view the choices for the slope (
UNDEF
=
undefined slope). When they think the correct slope is
displayed, press
b
.
4. Record the endpoints and slopes for each segment and their
final score. The segments are different on each calculator and
each time the game is played.
Scoring:
There are no
points awarded in the
linked version. Students
must answer correctly
before the next line
segment is shown.
The player who reaches
the right side of the grid
first wins.
Linked Calculators Screen Cross
Tell students to:
1. Connect two similar calculators using a unit-to-unit cable.
2. Use the grid to help determine as quickly as possible the slope
of the line segment.
3. Select the slope as they did in Screen Cross.
4. Record which player won.
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