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.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

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

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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.

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

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

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 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.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

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.

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

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!

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

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.