Teaching Algebra with Manipulatives

NAME ______________________________________________ DATE ____________ PERIOD ____
Algebra Activity Recording Sheet
(Use with the Lesson 5-3 Preview Activity on page 271 in the Student Edition.)
Investigating Slope-Intercept Form
Materials:
scissors, plastic sandwich bag, long rubber band, tape, centimeter
ruler, washers, grid paper
Analyze the Data
1. The domain contains values represented by the independent variable,
washers. The range contains values represented by the dependent
variable, distance. On grid paper, graph the ordered pairs (washers,
distance).
2. Write a sentence that describes the points on the graph.
3. Describe the point that represents the trial with no washers in the bag.
4. The rate of change can be found by using the formula for slope.
r ise
run
change in distance
change in number of washers
Find the rate of change in the distance from the desktop to the end of
the bag as more washers are added.
5. Explain how the rate of change is shown on the graph.
Make a Conjecture
For Exercises 6–8, draw your graphs on grid paper.
© Glencoe/McGraw-Hill 98 Teaching Algebra with Manipulatives