Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: bar graph, data, dot plot, median, mode, range
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)

Sally holds a yardstick in the air, and Mark gets ready to catch it when it drops. When Sally drops the yardstick, Mark tries to catch it as fast as possible. The distances that the yardstick dropped before being caught are shown on the graph.

What was the most common result?

What was Mark’s best result?

How many times did Mark catch the ruler at 17 inches? 15 inches?

If you had to summarize Mark’s results with a single number, what would you use? Explain.