## CHAPTER 4: DATA RELATIONSHIPS

**Lesson 3: Interpreting and Comparing Bar Graphs **

Use these interactive activities to encourage students to have fun on the Web while learning about data relationships. Students can try these activities on their own or in pairs.

**Goal**

Interpret and compare bar graphs that use different scales.

**Builds Upon**

Student Book pages 114–117

**Instructions for Use**

**Bar Graph** allows students to graph data in bar graphs and to change parameters.

To use Bar Graph, look at the bar graph that displays and then scroll down to see the various choices that you can change such as bar width, scale, and colour; graph, *x*, and *y*-axis titles; and data set. You can also enter and graph your own data by clicking on “Clear Data” and typing in each number in your data set, followed by a comma and the name of the item on a separate line. For example, type “7, oranges” to have the program display a bar with a value of “7” and the title “oranges”. When finished, click on “Graph Data” to see your results.

**Bar Graph ** allows students to review how to read, interpret, and make bar graphs.

To use Bar Graph, read the first screen and then click under “Let’s Practice!” at the bottom. Consider the bar graphs on the second screen and answer the questions that follow. Click on the drop down menu to reveal the correct answer. To return to the first screen, scroll down to the bottom and click under “Let’s Review”.