Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Is it a square or a circle? See if you can trick your friends with this zany science project!

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This is a fun and inexpensive project and it's a great way for your child to build basic geometry skills, like shape recognition and pattern/angle familiarity.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

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

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

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Do different types of oil mix or stack? Find out in this science fair project idea!

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

In this design challenge, your child will use building bricks to create a funny face. The activity instructions include question prompts thta can help guide your child through the creative process, and promote their problem-solving skills.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

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.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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