Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Construct batteries that make electricity from fruits with this fun science fair project.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Discover which fabrics shrink the most in the wash and why.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

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

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

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

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

What happens when colored beams of light mix? You might be surprised.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

Learn all about balance and motion as your child designs a corn maze!

Find out which type of sponge holds the most water.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!