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!

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Use simple materials to build a "worm hotel" with your kindergarten soil scientist...and see what worms really do all day.

Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

Children use their design thinking skills and powers of observation to create and construct a bird nest.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

Using a toy race car kids create a visual model of the Doppler Effect.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

Help your child make a beautiful homemade sandcastle that will last!

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Try this chemistry experiment with your curious kid and get some "shocking" results!

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.