Help your kindergarten scientist discover relative size, density, and buoyancy with this fun, pumpkin science project!

Give your budding young observers a chance to discover simple machines at use in their own home.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

This science fair project idea demonstrates sonar mapping of the ocean floor.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

This science fair project idea produces sounds by creating vibrations using different objects.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

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!

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

This kids' activity is fun to perform and impressive to watch. Plus, it's a great example of Newton's First Law of Motion at work.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

Show your teen how to make her own beeswax lip balm. It's one of the simplest do-it-yourself activities, and it's fun to make!

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Does your child know that salt water conducts electricity? This simple experiment will show how salt water acts as a conductor to electrical currents.