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.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

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

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.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

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.

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

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

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

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.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

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.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project will help students learn about non-vascular plants, such as mosses.

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

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.