Early Childhood

Using an empty 2-liter bottle, condiment packets (ketchup, mustard, mayonnaise, etc), water, salt, and a bowl, children will explore how to make the condiment back rise and fall at their command as they make a Cartesian Diver. Children will also learn about density and the density rule for sinking and floating.      

Using a fresh raw egg, water, a tall glass, salt, sugar, 1/2 tsp measuring spoon, and 1 c measuring cup, children will explore whether or not a raw eggs sinks or floats in water. They will then add salt in one experiment and sugar in another to see how that impacts the egg sinking or…

Using an orange, a large clear bowl, and water, children will explore whether or not an unpeeled orange will sink or float in water. They will then take the peel off the orange and test it again. Children will learn the density rule for sinking and floating.        

Using honey, light corn syrup, dish soap, vegetable oil, water, rubbing alcohol, a tall glass or clear plastic vase, small drinking glass, food baster, glass marble, a grape, paper clip, food coloring (optional), 1/4 c measuring cup, and various other small objects, children will build a six-layer density column and watch as some objects don’t…

Using a couple tea light candles, clay, water, a ruler, pencil, and a clear plastic container, children will explore with things that sink and things that float. They will start to understand that weight doesn’t determine if something sinks for float and also learn the density rule for sinking and floating.