How many do you see?

How do you know?

How did you see it?

2, 3, 4, 5, 6+

Seeing mathematics in the world

Attending to and using structure

Composing and decomposing number

Thinking in equal groups

Connecting area and multiplicative thinking

Sorting, organizing, and using attributes

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

On a grid paper, design a sidewalk made of square tiles where a portion is missing. Swap sidewalks with another group: How many tiles are on the sidewalk? How many are missing?