This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Future whistleblowers can learn about product safety standards with this exercise in writing and researching.

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

Take a dive into the candy jar with this yummy science experiment.

Celebrate autumn with a seasonal bash. Welcome the fall with a festive party for your little one and her friends, full of crafts, snacks and fun games.

Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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

Give your child a chance to experiment with how things grow. And throw in something extra to up the fun factor even more...her very own grass pet!

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

In this challenge, students are tasked with creating a car that can be powered by a balloon!

This middle school project examines the strength of horizontal versus vertical pointing eggshells.

Analytical chemists perform chromatography to separate colors into pigments. Test the food coloring used in M&M's and Skittles candy in this fun project!

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

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.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

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

In this art project, budding entomologists will create a larger than life, moveable puppet version of a praying mantis.

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!

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

Measure the effectiveness of detergent containing a UV-absorbing compound in blocking UV-A radiation. Use black light and UV detecting beads.

What colors can dogs see? Do they only have black and white vision, or can they see other colors too? Find out in this cool science experiment!

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

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