About how many do you see?

How do you know?

What do you notice that can help you estimate?

3, 4, 5, 6+

Seeing mathematics in the world

Attending to and using structure

Composing and decomposing number

Decomposing and using benchmarks to estimate

Connecting area and multiplicative thinking

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

How many books do you think are in your classroom?

Your school?

Your school’s library?

How could you estimate?