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Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

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.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Check out this cool science fair project on identifying rocks and minerals for kids.

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.

This project compares the strength of one, two, and three-ply toilet paper.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Science fair project that determines whether mass and weight are the same or different.

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.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

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.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.