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

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

This science fair project idea compares the cuteness reaction between genders.

Demonstrate and explain holographic technology. Determine if a holographic image of a magnifier still magnifies the object beneath it. Explain the effect.

This science fair project idea investigates whether body language and heart rate can decipher who's lying and who's not.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

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!

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Inspire your child to learn about an amazing animal as she creates her very own polar bear habitat.

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

Determine if âdouble dippingâ chips really spreads more germs than dipping only once per chip.

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

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

This project involves the development of a website using free software online to promote the value of science.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

Do you think heat can affect a plant's growth rate?

This science fair project idea determines exactly how much of an effect road grade has upon a cyclistâs speed.

Learn all about balance and motion as your child designs a corn maze!

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

This science experiment tests if dog saliva can really help heal wounds.

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

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.