This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Find out which type of sponge holds the most water.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

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

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

Will the shape of an ice cube impact how fast the ice melts?

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

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.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.