How many?

How do you know?

How did you see it?

K, 1, 2, 3

Attending to and using structure

Connecting number and quantity

Composing and decomposing number

Making 5 and 10

Thinking in equal groups

Connecting area and multiplicative thinking

Sorting, organizing, and using attributes

Using units to count, measure, and compare

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

How could you arrange the same coins in a different pattern? 

For grades 2 and up you can try the following as well:

How could you represent the same total value using different coins?