Here is a fun way for the children to learn about color mixing and buoyancy. Have the children fill their clear plastic cups half way full with water. Next have them squirt shaving cream on top of the water.
Once the children have their cups ready let them drip water colors on top of the shaving cream with eye droppers. Encourage them to use two colors at a time so that as the color goes through the shaving cream and into the water they will be able to see the colors mix.
As the children drip the color on top of the shaving cream they will be able to observe the color coming through the shaving cream and dispensing into the water.
Use the picture above as a direction card for the children. This will allow them to do the experiment independently.