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.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

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

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

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

In this activity, your child will be challenged to make a tower using paper cups.

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

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

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

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Take a dive into the candy jar with this yummy science experiment.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

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.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Will increasing the amount of salt in water effect how slow or fast the water freezes?