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

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.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This classic children's game demonstrates how sound travels through air vs. through a solid.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

Do you think heat can affect a plant's growth rate?

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Test whether plants can grow without sunlight and water.

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

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

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

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Discover whether a metal will expand under hot water.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

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