Middle School Science Experiments (Page 140)

Build a Bathtub Toy Raft Powered by Surface Tension

STEM Activity

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Have you ever wondered why a water strider can walk on water? Or how detergent can clean your dishes? If you look around you carefully, you can find dozens of similarly interesting phenomena that are all linked to the surface tension of water. In this science activity, you will make a little toy raft that is actually powered by surface tension, and use your vessel to investigate how surface tension works! Read more

Build a Color-Detecting Rover

Science Fair Project Idea

Engineering Design Process

The Mars Curiosity and Perseverance rovers use scientific instruments, nicknamed ChemCam (Figure 1) and SuperCam respectively, to help them analyze the composition of rocks and soil on Mars. You can learn more about these cameras from the resources in the Bibliography, and more about why scientists want to analyze rocks on Mars from the video on this page. Figure 1. The two main parts of the ChemCam instrument on the Mars Curiosity rover. For a science… Read more

Build a Disk Siren

STEM Activity

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If you live in an urban area, you probably hear them almost every day: sirens. Police cars, ambulances, fire trucks—they all can come blaring. Their wailing sounds are piercingly loud to help alert others to clear the road in front of them. But have you ever thought about how this loud noise is generated? Make your own disk siren in this activity and find out for yourself. Read more

Build a Light-Up Activity Timer

Science Fair Project Idea

Engineering Design Process

Do you have trouble remembering when to stop playing and clean up? Have you ever had little kids throw a tantrum about cleaning up while you were babysitting? If so, this project is for you! You will convert a stuffed animal into a light-up activity timer. You can use the timer for different activities like play, exercise, or doing homework. What you use it for is up to you! Read more

Build a Water Sprinkler Toy

STEM Activity

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Do you enjoy playing with water? Have you ever considered building a water sprinkler toy? It is easier than it looks! Get some PVC pipes, a few connectors, and a backyard water hose, then drill a few holes and start connecting! What will be your most creative and most fun design? Read more

Build an Autonomous Arduino Robot with Bump Sensors

Science Fair Project Idea

Scientific Method

Mechanical switches are common in many machines and robots. They can be used to detect when a button is pushed, when a door is open, or a low-speed collision when two objects bump into each other. Switches can act as "bump sensors" on a simple robot to help it detect when it hits an obstacle. The robot can use this information to navigate around obstacles and avoid getting stuck. Can you build and program a robot that can drive around your house while using bump sensors to avoid obstacles? Read more

Build Fun Robots with Students

Blog Post

Encourage students to explore robotics with a guided, hands-on project or activity. Science Buddies has projects, activities, Lesson Plans, and convenient kits that make it easy to do robotics with students. Build Fun Robots! Robotics projects for K-12 students. Hands-on STEM with Science Buddies. www.sciencebuddies.org Student Robotics Projects and Activities Science Buddies has projects at all levels for student robotics. See our Bring Robotics to… Read more

Build Personal Playlists with Machine Learning

Science Fair Project Idea

Scientific Method

AI has the power to organize data into categories—even when it is not given clear instructions. In this project, we will create an unsupervised K-Means learning model that organizes songs into distinct groups based on their similarities. The best part? You don't need advanced coding skills; just bring an open mind and a desire to explore the fascinating intersection of music and technology. Are you ready to embark on this exciting journey? Read more

Build Your Own Sports Equipment

STEM Activity

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Do you play or watch a sport where you use something (other than your hands or feet) to hit a ball? Golf, baseball, tennis, hockey—there are many different sports where players use something to hit a ball or a puck. In this activity you will design, build, and test your own sports equipment made from recycled materials. Read more

Building a Halloween Brushbot: Family Robotics

Blog Post

An orange scrub brush gives a family science activity a boost of jack-o-lantern-inspired fun and leads to a great robotics exploration. Ever since the new Brushbot family science activity launched at Science Buddies, with electronics components conveniently bundled in a multi-project kit, I have had it on my "must make" list for my kids. Thinking it would be cool to couple trick-or-treat month and the robotics project, I decided we would make a… Read more

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