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Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Learn all about balance and motion as your child designs a corn maze!

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This science fair project idea examines the reason boats are shaped and engineered.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Science fair project that examines condensation and the conditions needed in order for dew to form.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

This science fair project idea produces sounds by creating vibrations using different objects.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

This science fair project idea examines whether boys and girls differ in reflexes.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.