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Try the annual Engineering Challenge from Science Buddies! Open to all students worldwide, a new challenge and prizes are announced every January. Explore the current challenge as well as ones from past years!
Blog Post
February is Black History Month. Learn more about some of the many African American scientists and engineers who have made important contributions to science history.
Black History Month: 35 Scientists to learn more about!
Update! This post has been updated for 2024 to include additional African American scientists and engineers.
In honor of Black History Month, we highlight 38 African American scientists and engineers who made important contributions…
Do you think you could build a car powered by nothing but air? A balloon-powered car is pushed forward by air escaping from a balloon, and it is fun and easy to build with materials you already have around your house. Can you imagine how you would want your own balloon-powered car to look? Can you design a car that will travel as far as possible? You can even measure your car's speed using your smartphone and a special sensor app. Get ready to grab some simple supplies to bring your idea to…
STEM Activity
668 reviews
Build a balloon-powered car from recycled materials in this fun activity. You can even grab a friend, build two cars, and race them against each other!
How can you make a train without wheels? By using magnets! In this project you will build a magnetic levitation ("maglev" for short) train that floats above a magnetic track. How much weight can you add to the train before it sinks down and touches the track?
Project Resource
What is an acid or a base?
Whether a liquid is an acid or a base has to do with hydrogen ions (abbreviated with the chemical symbol H+). In water (H2O), a small number of the molecules dissociate (split up). Some of the water molecules lose a hydrogen and become hydroxide ions (OH−). The "lost" hydrogen ions join up with water molecules to form hydronium ions (H3O+). For simplicity, hydronium ions are referred to as hydrogen ions H+. In pure water, there are an equal number of hydrogen…
When you think of a motor, you may immediately think of a car, but you actually encounter other motors in your home every day. That's right, if you put on clean clothes from the washing machine, ate food from the fridge, or used a fan, you used an electric motor. In this electronics science project, you will make a simple electric motor with two magnets that "talk" to each other. As they interact, they will alternate between "liking" each other (pulling together), and "disliking" each other…
STEM Activity
493 reviews
Make a colorful erupting volcano in your kitchen with lemons and baking soda!
Project Resource
Many electronics projects use something called a breadboard. What is a breadboard, and how do you use it? This tutorial video will give you a basic introduction to breadboards and explain how to use them in beginner electronics projects; you can also read more details and see more examples in the text sections.
More About Breadboards
Introduction
What is a breadboard?
Where does the name "breadboard" come from?
Are there different kinds of breadboards?
What is a "solderless"…
STEM Activity
228 reviews
Create a giant foaming reaction and wow your friends with this classic science demonstration! With just a few simple ingredients, you can make something that looks like toothpaste being squeezed from a tube—but so big, it must be for elephants!
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