What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

This science fair project studies whether DSLR and Point-and-Shoot cameras work the same way under all conditions.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Help your kindergartener expand social studies and science work while creating this lovely bag clip for the holidays.

This kids' activity is fun to perform and impressive to watch. Plus, it's a great example of Newton's First Law of Motion at work.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

Learn the chemistry and physics of the brain, how our nervous system work. Demonstrate that the brain is an electrical and chemical machine.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

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.

Research overview of architecural acoustics. Design and build a whispering wall from wood or plastic. Test which materials work best.

The objective of this science fair project idea is to explore which brands of "anti-fade" shampoos work the best to keep hair color looking fresh.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

Try this simple activity with your middle schooler to help him develop an understanding of why scientific classification systems exist and how they work.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.