Last Tuesday our two classes came up with their own science experiments. Ms. Sarah's class wanted to make roller coasters to see how they could work with marbles, cars, and other items going through them.
Using toilet paper rolls, paper, and tape the class worked together in teams to make their rides.
While they didn't have a ton of time to work on their structures, all of the students were able to test out how they worked using marbles, staying either on the floor or making a sort of slide from the table.
Meanwhile, the 4th and 5th graders were experimenting with water, food coloring, and oil. The project was about the density of liquids, and how some liquids are "heavier" than others.
Each cup was filled halfway with water, and then vegetable oil was poured gently down the side of the cup to make a decent layer on top of the water (we made it about 1 inch deep). Then, we used mini droppers to drop food coloring mixed with water into the solution. (Most examples said to only use the food coloring, but we found that the water/food coloring mixed worked better to make it through the layer of oil.)
Once it made it through the oil layer, the colored water made a cool explosion as it started to spread out in the water. We did this several times using different colors and different sizes for the oil layer, ranging from 1 inch to 1/4 of an inch. Everyone was involved and had a chance to help with the project!