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?

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

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

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

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

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

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 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.

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

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

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.

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

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

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

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

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.

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.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

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.

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

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

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

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

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

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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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