About how many do you see?

How do you know?

What do you notice that can help you estimate?

1, 2, 3

Seeing mathematics in the world

Connecting quantity and number

Decomposing and using benchmarks to estimate

Sorting, organizing, and using attributes

After the class has discussed the questions above, you can extend this activity by posing the following questions:

If you have access to buttons, provide students with a new collection of buttons. Ask: About how many buttons do you have in your collection? What strategies can you use to estimate how many you have?