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.

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

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.

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?

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.

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

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

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.

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

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

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

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

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.

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.

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

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

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

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

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.

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!

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

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

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.

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

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