Look at Pattern 4.0 :

- How do you see the pattern growing?
- How many squares will be in Figure 10?
- How many squares will be in Figure 100?
- How can you figure out how many squares will be in any figure?

Now look at Pattern 4.1:

- How do you see the pattern growing?
- How many toothpicks are in figure 7?
- How many toothpicks are in figure 507?
- How can you figure out how many toothpicks will be in any figure?

Now look at Pattern 4.2:

- How do you see the figure growing?
- How many squares are in figure 8?
- How many squares are in figure 808?
- How can you figure out how many squares will be in any figure?

## Reference

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