Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Take advantage of the spring and summer sun in this arts and crafts activity that has your learner creating pretty flower prints.

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

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

This project compares the strength of one, two, and three-ply toilet paper.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

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

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

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

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

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.

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

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!

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?

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