This simple experiment serves as an introduction to the greenhouse effect.

This science fair project idea researches the effects of acid rain on plant growth.

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

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

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

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

In this science project, baking powder and vinegar are used to simulate the action of a fire extinguisher.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

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

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

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

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.

Try this chemistry experiment with your curious kid and get some "shocking" results!