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

Teach your child how butter is created by shaking up cream the old-fashioned way.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Is your child a nature nut with an eye for creative, green-friendly projects? Introduce them to this amazing DIY bird feeder!

This simple experiment serves as an introduction to the greenhouse effect.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project idea experiments with spinning color wheels and optical illusions.

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Find out which type of sponge holds the most water.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

In this science fair project, students use the streak test to tell minerals apart from each other.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.