In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

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

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

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

In this science fair project, young children notice and track changes in trees throughout the year.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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?

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

This classic children's game demonstrates how sound travels through air vs. through a solid.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

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

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

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

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

This science fair project teaches students about wilting and browning of salad greens.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This project makes young children uniquely aware of their sense of touch and its ability to alone give them information about the world around them.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

In this project children practice the scientific method while playing with puffy paint.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.