Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project idea determines the most effective method of preserving food.

This science fair project idea investigates the difference in reaction times between boys and girls.

The goal of this science fair project is to demonstrate current methods of detecting counterfeit money, in particular counterfeit detection pens.

This science fair project idea demonstrates the property of bouncing in a fresh new way.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

This science fair project idea determines if family members can recognize one another using only the sense of smell.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

This project explores whether similar type movie scenes are accompanied by music with similar characteristics.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

Demonstrate the principle of jet propulsion in this science fair project by building a rocket from household materials.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Devise list of randomly chosen words, test how many words volunteers can remember. Compare results of adults and children. Which have better memories?

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Here's how you and your teen can stage your own formal debateâbeyond arguing why chores are unethical! Formal debates improve teens' critical thinking skills.

Explore the neural and mental mechanisms at play in mental imagery.

This science fair project idea quantifies the effect of specific food sources on red worm (Eisenia foetida) livelihood.

Study emulsifiers and learn how they are used in food science, medicine, soaps and cosmetics. Identify which materials are created using an emulsifier.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

This science fair project idea raises awareness of a real ecological issue.

This project examines germs and their spread in households. The goal is to learn how to stop the spread of germs and other diseases.

What combination of cloth and stain will be the easiest for removing stains? Test and experiment!

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Which type of sunglass lenses gives you the best protection from the sun's harmful UV rays? Find out in this cool science project!

For a fun family activity to introduce your child to genetics, have your child go on a search for dominant and recessive family genes!