Mathematics 7

# Surf for More Math

## Lesson 5 - Using a Scatter Plot to Represent a Sequence

Use the following interactive activities to encourage your child to have fun on the Web while learning how to use a scatter plot to represent a sequence.

### Goal

Use scatter plots to represent number sequences.

### Builds Upon

Student Book pages 138-141

### Instructions for Use

Sequencer lets your child create sequences by inputting the starting number, multiplier, or add-on, and then see what the sequence would look like on a scatter plot.

To use Sequencer, enter a starting number, and then a multiplier or an add-on in the text boxes. Click the "Calculate Sequence!"' button. A graph displays the sequence on a scatter plot. You can click the box beside "Connect Data Points" to connect the points in the scatter plot. Change the initial values and see how the sequence changes.

Scatter Plot lets your child create a scatter plot to see a trend emerging in the data.

To use the Scatter Plot, create your own toothpick pattern, like the toothpick patterns found on pages 140 and 141 of Nelson Mathematics 7. Create a table of values for your pattern and then click on the grid to plot the data points. See how your toothpick pattern is represented as a scatter plot. Click the "Reset" button to begin again.

If you scroll down the Web page, you will see 3 more scatter-plot grids to work with. Some scatter plots involve data that do not follow a linear pattern. In these cases, you can find the line of best fit to determine an approximate linear pattern. To use the next scatter-plot grids, click on the grid to plot data points. Notice the changes in the line of best fit as additional data points are added. Working with the last three scatter plots are extension activities.