**Equipment:** Meter sticks or tape measures, stop watches, and rubber
balls

**Procedure: {**Participants will drop a rubber ball from various heights
and record the

time elapsed to the third bounce.}

1. Divide students into groups of 2. Each group will collect data for
at least 7 trials.

2. One group member will drop the ball from a designated height as the
other one times

how long it takes to get to the third bounce.

3. The students should pick 7 different heights and then do 3 trials for
each height. Use the

average of these 3 as the recording for the data.

**Data:** {(drop height, time to third bounce)}

Each group will enter it's own data into lists, graph and find a curve of
best fit. Then, make a class graph of all trials and compare each individual's
group curve of best fit to that of the class.

**MODIFICATIONS: **Measure initial height, height at first bounce, height
at second bounce, etc.

Data: {(bounce number, bounce
height)}

From: Teachers T eaching with Technology, 1995 Summer Institute

University of Texas at Arlington