Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

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

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

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

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

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.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

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

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.