Math Focus 2
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# Surf for More Math

## CHAPTER 5: DATA RELATIONSHIPS

### Lesson 6: Comparing Data

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.

Goals

Collect and organize data in a tally chart, and make a pictograph.
Compare pictographs to determine their common attributes.
[C, PS, R]

Instructions for Use

Tally Chart lets students collect firsthand data by doing an experiment, and record it on tally charts.

To use Probability, start by selecting the dice. Choose the number of spins - 1, 5, or 10. Click the “Spin” button. A tally chart records the results of each spin. Press the “Clear Tally” button to clear the results and start again. Select the “Make Dice” button and click in the radio buttons to choose the numbers of each face of the dice. Select the “New Dice” button to choose different set amounts on the face of the dice. Students may want to experiment with the spinners. To use the spinners, select one and choose the number of spins. Click the “Spin” button. A tally chart records the results of each spin. Press the “Clear Tally” button to clear the results and start again.

Pictogram Graph allows students to make their own pictographs (pictograms).

To use Pictogram Graph, read the instructions and decide on and enter a title for your pictograph in the long rectangle at the top of the table. Next, enter descriptions in the boxes provide on the left, of what each row represents, such as people you know, for example. Then choose a picture and colour, a scale, and the number of rows and columns in the boxes provided. Finally enter the number of your selected pictures by clicking on the appropriate line or on the “−“ or “+” boxes under the “Value” column on the right.

Interpreting Data Allows students to create a tally chart, which is then used to create a bar graph and a pictograph.

To use Interpreting Data, read and follow the instructions for creating the tally chart. Once the tally chart is done, click “Done”. Next, follow the instructions for creating the bar graph. Once the bar graph is completed, click “Done”. Next, follow the instructions for creating a pictograph of the data. Notice that 1 star represents 2 children. When you have completed the first question, click “Done” and select different questions by clicking on the left and right arrows next to the questions and repeat the activity.