K – CO – PP29

Ask students to identify an item that is lighter than themselves. Explain their thinking.

K – CO – OE2

One tower of blocks is a lot longer than another. What could the two towers look like?

K – CO – RT1

You need to find two objects in your classroom for a project. One of the objects has to hold a lot more water than the other. What two objects can you select?

K – CO – PP14

Provide students with two bags containing the same mass. Ask them which bag is lighter.

K – CO – PP15

Provide students with two bags containing the same mass. Ask them to predict and then test which bag is heavier.

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