Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

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

This science fair project teaches students the differences between fruits and vegetables.

This science fair project idea demonstrates that plants give off water.

This science fair project examines how seeds hitchhike on animals and clothing.

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

Do different types of oil mix or stack? Find out in this science fair project idea!

This science fair project idea investigates how magnetism can defy the force of gravity.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

This science fair project idea investigates how the shape of an object affects drag.

This science fair project idea investigates if fats add to the flavor of food.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea determines which method of hand cleansing is the most effective.

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

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

This science fair project idea explores how length affects the weight a bridge can hold.

Science fair project that examines condensation and the conditions needed in order for dew to form.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

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

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project teaches students about wilting and browning of salad greens.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!