Sink or Float Investigation

This sink or float experiment is for a Kindergartner classroom the objective is to understand the density of an object. This project is also a great use for making predictions or hypothesis, recording data, and graphing the conclusion. All in the scientific process. 

Materials:

• Plastic Eggs 
• Plastic Tub
• Tape (to cover holes in the eggs)
• Lego
• Feathers
• Coins
• Rocks
• Dry Pasta
• Crayons
• Water

Books:

• What Floats? What Sinks?: A Look at Density By Jennifer Boothroyd

• Floating and Sinking  By Niz and Ellen S.

• Who Sank the Boat By Pamela Allen

 All three books are different level of difficulty. They are all on what makes and object float or buoyant and what makes sink. These are exploratory text used for giving the basic understanding of what causes the floating and sinking.

Procedure: 

1. Using a graph sheet guess if the object will sink or float. For the earlier grades this can be marked by letters or certain colors, by a pictures of what the objects were.
2. As you conduct the experiment make markings to see if the object actually did sink or float. 
3. After the experiment ask the question Are the results what you expected? Make guesses on other objects that would sink or float.
4. Finally make a graph of the objects that float versus sink. 

Additional Resources:
Thank You to No Time For Flashcards for the idea and the pictures.
There is a lesson on Science Net Link
Kinder Days