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What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Determine how good we are at direct and indirect observation.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea determines what household items are good conductors of electricity.

Plants and light seem to be good buddies, but how far does the friendship really go?

Use a microscope in this experiment to learn about different kinds of "good bacteria" that turn milk into yogurt!

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

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.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Explore the negative and positive consequences of stereotypes.

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

Make an edible play dough with your child to help her develop her sensory and motor skills.

Make scented sensory cloud dough. Add it to a sensory table, activity station, or put it in a baggie for extra at-the-park entertainment!

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

Investigate the kinds of memories we tend to store and the emotions we store with them. Determine if memories have a strong emotional component.

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

This experiment evaluates how a diet that is rich in "mood-enhancing" foods affects the way people feel over several weeks.

Check out this cool middle school science fair project idea to find the difference between organically grown and commercial brands of foods.

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.

Science fair project that examines oxidation, reduction and chemical indicators by testing for the presence of the iodide in salt.

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

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play: