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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Get a better understanding of water content by dehydrating carrots.

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

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

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.

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

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.

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.

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

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

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

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

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

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

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

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

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

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

Make scented sensory cloud dough. Add it to a sensory table, activity station, or put it in a baggie for extra at-the-park entertainment!

In this activity, you'll send your kindergartener on a scavenger hunt to find sounds and create a sound recording. Here's how!

This science fair project idea investigates whether air has mass and weight.

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

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!

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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