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In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Show your preschooler how to make a print of a butterfly using her hand as a tool--a great way to stimulate her sense of touch.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

Who knew that nature could get so crafty? Show your kindergartener how to collect and morph pinecones into a whole team of personalized pinecone people.

Introduce your child to science with something they see everyday--their shadow!

Want to boost math and science learning? Take a bug expedition and give your first grader practice observing and charting what they see.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Help your kindergarten scientist discover relative size, density, and buoyancy with this fun, pumpkin science project!

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!