This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Use pepper and soap to discover some fun facts about the properties of water.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

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 are sure to be entranced by the magic of the ocean when they create their very own ocean in a bottle.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

In this design challenge, your child will create a parachute for a small toy using typical household items.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

Show your child the solar system and let them explore the stars and space by creating a painting. It's a fun and easy way capture your child's imagination.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

In this activity your child will create their very own marble maze!

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

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

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Discover how and which salt melts ice the quickest.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

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