Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

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

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

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.

Help your child celebrate the summer and the sun by making a sandy seascape.

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Make a spring collage with your child to get them outside and those creative juices flowing!

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

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

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 science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.