What Size Box Does This Need?

Materials Needed:

Several items of different sizes
Several different sizes of boxes that the different items will fit into it

What to Do:

Place the boxes in view of the children.
Place the items together in a large container, such as a bag or a box.
Invite the children to take turns pulling out an item from the container and then guessing which box would be the best fit for the item.
Let them try to fit the item into the box that they chose.