Also have extra pennies should they fall into the water. Make sure each work station has a container with water and a balance before students enter the room. Students should be placed into groups of two to four. Record data information group observes. Make sure area stays neat during activity and when completed.
Place drops of blue food coloring to create blue water.
Students will create a table to record observations. Provide half of a milk carton or a container to simulate floating vessel which has been cleaned and dried. Provide 50 pennies in a resealable plastic bag to each group. Students will place the container in the water to see the water line on the container. Take out the container and dry it off.