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In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

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.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

This science fair project teaches students about wilting and browning of salad greens.

Give your budding young observers a chance to discover simple machines at use in their own home.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

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

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

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

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Help your child learn about animal classification with this fun and delicious activity.

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.

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

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

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

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.