Explore the concept of receptive fields and why different parts of our body have different levels of sensitivity.

Help your young learner discover why the insects that a spider eats stick to its web but the spider doesn't.

Science fair project that examines various techniques for removing wrinkles from polyester garments to understand why polyester garments become wrinkled.

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

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

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

Try this simple activity with your middle schooler to help him develop an understanding of why scientific classification systems exist and how they work.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

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

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

This conservation of energy demonstration shows why the first hill is the highest on a roller coaster. Learn more about potential and kinetic energy!

Learn about our response to scents that existed in our environment over evolutionary time and consider why scents might affect our mood state.

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.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

The objective of this science project is to investigate why NASA has been using aerogel for the Stardust Project for collecting gas and dust from comets.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Study science with your first grader in this arts and crafts activity that models the reason why fall leaves change color with some paint and crayons.

Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Check out this cool science fair project idea to learn why it is important for kids to eat healthy foods like fresh fruits and vegetables.

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.