## Lesson: Mean, Median, and Mode

Developing the Concept

Use this lesson to show that double bar graphs are used to compare two sets of data.

**Materials:** overhead transparency

**Preparation:** Draw the graph shown below on an overhead transparency.

Display the double bar graph to students.

Participation in Camp Activities | ||||

Tennis | Swimming | Canoeing | Crafts | |

Girls | 30 | 35 | 15 | 10 |

Boys | 25 | 35 | 20 | 5 |

**Wrap-Up and Assessment Hints**

Encourage students to use mean, median, and mode to describe several different sets of data so they become familiar with the terms and what they mean. Assess students' understanding by having them explain to you what each term communicates about a given data set.