What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This conservation of energy demonstration shows why the first hill is the highest on a roller coaster. Learn more about potential and kinetic energy!

Look for correlation between pH values of commercial soaps and detergents and manufacturer claims about eye irritation hazards.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

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

This experiment examines if space objects become round after reaching a certain mass.

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

In this science fair project, young children notice and track changes in trees throughout the year.

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

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

This experiment explores the question of whether age and/or gender play a role in people's ability to remember dreams.

In this science fair project, students test how objects float and sink in liquids of different densities.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Discover if soda geysers will erupt when using regular vs. diet cola and which candies will create eruptions.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

Explore the wattage of microwaves in relevance to cooking time.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

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

Determine whether cats have dominant paws. Observe which paw cat uses to reach for treats, feather, and string. Calculate percentage for two paws.

Measure temperature change over time using a variety of insulation materials. Be creative with insulation materials: scarves, yarn, socks, feathers, oil, etc

Learn about how we localize objects and beings in space through sound and about monaural auditory mechanisms and binaural auditory mechanisms.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

In this science fair project idea, kids make water dance on the surface of a hot pan with the Leidenfrost Effect.

This experiment researches if you gave different amounts of food to mosquito larvae would they grow faster or slower

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

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

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Science fair project that examines the biodiversity of ant populations in various locations.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.