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

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

This science fair project idea identifies trees using a dichotomous key.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Science fair project that determines whether mass and weight are the same or different.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

This science fair project examines how seeds hitchhike on animals and clothing.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

This experiment tests which gender is better at catching how a magician performs his tricks.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Construct batteries that make electricity from fruits with this fun science fair project.

How do organic materials become soil? This science experiment measures what materials biodegrade.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

This science fair project investigates why the number of visible stars changes from place to place.

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.