Design your own pattern make of dots or toothpicks.
Draw the first three figures of your pattern.
Everyone's dots will look different, but make sure there is a pattern. Sharon's first three figures are below.
Show how you can predict how many tiles or toothpicks will be in the 30th figure.
For each figure of Sharon's pattern, there are
dots, where is the figure number.
In the 30th Figure, there are
dots, since .
Try writing a similar expression for the number of dots in your pattern.