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Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Think about the adaptive utility of an important aspect of our physiology.

This middle school science fair project determines whether DNA is most easily extracted from under-ripe, ripe, or over-ripe strawberries.

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

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.

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

This kindergarten science activity will help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

This science project researches the correlation between barometric pressure and wind velocity.

This science fair project idea tests the efficacy of both synthetic and natural antibiotics.

Word color association is just a fancy way to talk about the way we connect colors with words.

Determine how good we are at direct and indirect observation.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

This science fair project idea tests the efficiency of short term memory.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

This project examines the concentration of dissolved oxygen in water, with and without oil.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.

Determine which factors promote the greatest memory interference. Administer test, time how long it takes subjects to complete different tasks.

Science fair project that studies how the brain transforms man-made symbols into meaningful concepts.

The objective of this science project is to investigate patterns in fingerprints among family members.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Explore the neural and mental mechanisms at play in mental imagery.

Do thick liquids flow faster than thin liquids? Examine water and syrup's viscosity and inertia to learn about the Reynolds Number, laminar and turbulent flow.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.