Functions can be fun! |

**Vyckye Cox**
**Missouri City Middle School**

**Math and Algebra I, Eighth Grade **

**Materials: **

**Center 1: miniature cars, a wooden board to be used as a ramp, a timing device(a stopwatch, calculator with timing program,or a watch with a second hand)and 8****blocks****Center 2: a pvc pipe, marbles, a ruler with cm measurements, and 5 blocks**

**Prior knowledge:Measurement and Graphing**

**Description: Teachers will set up two areas for each group(i.e. 2 areas
for center1 and center2)and assign students to groups. Students will be given
directions on how to move from center to center. After each group completes
their center activities, their should be an area for debriefing. It might be
helpful to have an additional center for debriefing.**

*For center 1, students will:***Collect data by rolling a car down a ramp from heights of 1, 2, 3, 4,5,6,7, and 8 blocks.****Release the car from the top edge of the ramp.****Measure the time (in seconds) that the car travels.****Record the height of the ramp and the time the car travels.****Graph the data and describe the relationship between the independent and dependent variables.***In center 2, students will:***Roll a marble through a PVC pipe from heights of 1,2,3,4, and 5 blocks.****Release the marble at the edge of the pipe.****Meassure the distance(in cm) that the marble travels once it leaves the end of the pipe.****Record the height of the pipe and the distance the marble travels.****Graph the data and describe the relationship between the independent and dependent variables.**

**Procedure:Students will navigate from center to center. In each center,
students will follow the directions given. The directions above should be placed
in each center for students to follow.**

**URLs pertaining to the lesson:**

**SMARD Website****http://smard.cqu.edu.au/Database/Junior/Algebra/Linear_Functions/**

**Clarifying the TEKS****http://www.tenet.edu/teks/math/clarifying/clalg1line.html**

**Math Activities for K-12 Teachers****http://daniel.calpoly.edu/~dfrc/Robin/**

**Directions: Students will be informed that today they are working in
groups. Remind them of the group working rules. Give each student in the group
a special assignment(i.e project coordinator who reads the directions
and oversees the project, data collector to record the data as it is
collected, materials manager to collect all materials as needed and organize
the materials in the center, a communicator to relay any information
from group to the teacher or from teacher to the group**

Questions: Compare the two graphs after you have completed the two activities. What observations can you make about the graphs? What kind of graphs are they? Are they functions? How would you defend your reasoning?

**Gender Issues**: Since students are working in groups, it is important
that the teacher check to make sure that all students are working cooperatively
and have a specific role in the group.

Special thanks to:

Reference: The activities were taken from the Algebra Institute

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This page was last edited on (July 25,2002)

These pages were developed through GirlTECH, a teacher-training program sponsored by the Center for Excellence in Education (CEEE) and with support from the National Science Foundation through EOT-PACI.Copyright © (Vyckye Cox), (June), (2001).