This middle school science fair project determines whether DNA is most easily extracted from under-ripe, ripe, or over-ripe strawberries.

Check out this cool science fair project on identifying rocks and minerals for kids.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.