4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

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

This science fair project idea compares biodiversity between drops of water.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science project teaches students to classify different shapes of leaves.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project teaches students the differences between fruits and vegetables.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This science fair project idea investigates how color affects temperature.

This science fair project idea explores the egg's thin membrane.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

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

Take a dive into the candy jar with this yummy science experiment.

This science fair project idea produces varying pitches of sound.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

This science fair project idea determines what household items are good conductors of electricity.

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

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

This science fair project idea explores the different properties of matter.

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

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

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