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

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

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

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

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

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

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

This science fair project will help students learn about non-vascular plants, such as mosses.

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.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Plant a mini herb garden and teach your child about science and nature.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

In this fun activity, your child will create their very own solar oven to bake s'mores!

This science fair project idea examines which type of insulation holds in the most heat.

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

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Kids conduct a simple science experiment to see if seeds can grow without soil in this simple kindergarten science activity.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

This science experiment tests if dog saliva can really help heal wounds.