What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

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

The project determines determine if a sports drink affects the heart rate of a student athlete during exercise.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

This science project idea examines the effect of microwaving on various objects.

Looking for a way to help your teen explore the fun side of physics? How about a round of Saturday morning cartoons?

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

Check out this fun science project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

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.

Kids learn how fiber optics work with a dramatic total internal reflection experiment using a fish tank, water, and a laser pointer.

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

Think about the adaptive utility of an important aspect of our physiology.

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.

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.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

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

This science fair project idea determines what household items are good conductors of electricity.

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

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

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

Check out this cool science fair project idea to explore the relation between onions and eyes and how to prevent eyes from tearing while cutting an onion.

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

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

Learn how different types of soil affect how animal tracks form in this experiment!

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

This science fair experiment examines the relationship between gender, age, and smiling.