Science Projects (1,432 results)

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Over 1,200 free science projects for K-12. Browse by subject, grade level, or try our Topic Selection Wizard to find your winning science project. With science projects in 32 different areas of science from astronomy to zoology, we've got something for everyone!

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15 Best Science Projects - Our Scientists’ Picks

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Teaching Machines to Understand Sign Language

Science Fair Project Idea

Engineering Design Process

Can AI understand human language? In the future, AI could aid in emergency interpretive service in the hospital when translators aren't available. But can current AI algorithms understand non-verbal languages like sign language? In this science project, you will test whether AI can learn sign language gestures or phrases to see if it can be used for interpretation. Read more

Make an Automatic Pill Dispenser

Science Fair Project Idea

Engineering Design Process

Remembering to take medicine at the right time can be hard, especially if you need to take multiple medications at different times of day. It might not be a big deal if you forget to take your daily multivitamin, but for some people, forgetting to take medication at the right time can be dangerous. What if you had a device that could not only set off an alarm at the right time, but also automatically dispense the right pills for you? In this project, you will build an automatic medicine… Read more

Tracking SARS-CoV-2 Spread from Wastewater

Science Fair Project Idea

Scientific Method

Have you ever wanted to know where hot spots of infection are or see how viruses spread? Are you interested in seeing how this changes over time? Check out our new science project that uses data visualization tools and tested wastewater data to track the virus that causes COVID-19 over time. Read more

A Simulator for Suborbital Spacecraft

Science Fair Project Idea

Scientific Method

Have you ever wished you could fly to space? Space flight is getting more accessible thanks to reusable rockets that make getting to space much cheaper. Civilian astronauts can even buy tickets for a few minutes in space! But exactly how high is "space"? How do engineers predict how high a rocket will go and figure out how to make it land safely? Find out in this project as you explore the physics of suborbital space flight. Read more

Build and Test a Sun-Tracking Solar Panel

Science Fair Project Idea

Scientific Method

How can you get as much power as possible out of a solar panel, even in the morning or evening when the sun is low in the sky? With a solar tracker system! While many solar panels are fixed in place on rooftops or large ground-mounted poles, a solar tracker system is motorized and lets the solar panels track the sun through the sky during the day. Are these systems worth the added complexity? How much more power do they produce? Try this project and find out! Read more

Rocket Catcher Challenge

Science Fair Project Idea

Engineering Design Process

Inspired by real-world reusable rockets, in this engineering challenge, you will design and build a device to catch a falling rocket so it lands vertically. Drop the rocket from higher and higher heights to get a better score! The 2025 Science Buddies Engineering Challenge is over, but you can check out this page to see our other past engineering challenges and what this year's challenge will be! Teachers, lesson plan versions of this challenge are also available. Read more

2026 Ball Run Challenge

Science Fair Project Idea

Engineering Design Process

In this engineering challenge, you will build a ball run from paper and tape, but there's a twist! You want to make your ball run as slow as possible. How long can you make it take for the ball to get from the entrance to the exit? Read more

Remove Microplastics from Water with Bioremediation

Science Fair Project Idea

Scientific Method

Have you ever walked by an ocean, lake, or river and seen plastic trash? Have you ever wondered how microplastics might be impacting the creatures living in these places? In this science project, you will investigate how yeast can be used in bioremediation to remove microplastics from contaminated water. Read more

Classify Spam Emails with Natural Language Processing

Science Fair Project Idea

Engineering Design Process

Have you ever wondered how your phone or email automatically detects and filters junk messages into spam? This feature helps ensure you focus on the messages that truly matter. In this project, you’ll build your own spam detector using natural language processing (NLP) techniques. Read more

Build an Obstacle-Detecting Walking Stick for Blind People

Science Fair Project Idea

Engineering Design Process

Many individuals who are blind or visually impaired use canes to navigate their surroundings, using their sense of touch to detect obstacles. What if you could create an electronic cane that emits an audible warning before coming into contact with an object? This project allows you to do just that by incorporating an ultrasonic distance sensor and a buzzer to alert the user of approaching obstacles. You can customize the cane by adding additional features or altering the design, such as using a… Read more