In celebration of Earth Day, help your fifth grader write a poem from the Earth to its inhabitants.

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.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.