Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

This science fair project idea determines if the color of light affects the growth of plants.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Science fair project that determines whether mass and weight are the same or different.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.