The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

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.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Are you looking for an out-of-this world activity that's both fun and educational? This solar system garland is a great way to introduce your child to astronomy.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

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.

This science fair project idea measures and compares effects of chemical weathering, specifically carbonation, on different kinds of rocks.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

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

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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 science fair project, kids start a chemical reaction that will make a balloon inflate itself!

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

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

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

Help your fifth grader embrace the roots--literally--of Mother's Day by growing carnations to honor mothers in you family's history.

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

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

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

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!