Let children construct boats from two toilet paper rolls stapled together. Glue a triangular piece of construction paper to a craft stick and stick it between the rolls to make a sail. Use a tub of water or plastic pool to float the boats. (These don't last long, but the children will have fun constructing them.)
*Mold boats from aluminum foil. How many small toys can their boat hold before it sinks?
*Carve a boat from a bar of Ivory soap. Glue paper to a toothpick and insert it in the soap to make a sail. Make a raft from popsicle sticks. Lay down two sticks. Glue ten sticks on top of them. Dry and then decorate with markers.
*Give children recycled materials (trash and scraps) to use to create boats and other things that float.
You will need the following
Blue food coloring
Add a few drops of blue food coloring to the cream cheese. Let the children spread the cream cheese on one half of a bagel. Decorate with 4
Collect sticks of different lengths and have the children put them in order from smallest to largest.
*They could also seriate leaves, rocks, etc.