Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science fair project idea explores substances that cause a bubble to last longer.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

In this project students experiment with making music using only glasses of water.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

In this science fair project, students use the streak test to tell minerals apart from each other.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

This science fair project idea explores whether talking to a plant will help it grow.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

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

In this experiment we will be determining whether birds prefer certain colors of seed.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

Learn whether writing things down really makes things easier to remember.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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

This science fair project idea determines if the color of light affects the growth of plants.

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

This science experiment has students test whether a snail moves faster on concrete or dirt.

This science fair project idea examines which type of insulation holds in the most heat.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

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