Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project idea provides evidence that air is everywhere and takes up space.

Tin can phones offer something modern versions don't—a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.

Create uphill flow of water by using a siphon. Create vacuum by suctioning one end of tube, and submerge it under water. Watch the direction the water travels.

Examine the effect of pressure on carbonation in soda.

This project examines the concentration of dissolved oxygen in water, with and without oil.

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.

In this design challenge, students will be tasked with creating a bouncy ball polymer!

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This experiment investigates whether the Ranschburg Effect is observed more frequently in older or younger adults.

Help your kindergarten scientist predict and observe as she explores the science of smell...and have a great time doing it, too.

Does nail polish really slow the growth of nails? Explore in this science fair project idea.

This science fair project examines the different composition of fungi and plants.

Explore if planting seeds in a certain direction will affect how fast it germinates.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Make homemade lemonade in a baggie with your preschooler with this fun and easy recipe.

Make a backbone model to explore human anatomy and life science.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

Have your child kick off their summer vacation by making a miniature water slide!

Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.