As students, we’ve often found it tricky yet exciting when teachers explain how electricity moves through different materials. Metals are easy to understand because we can see them conduct electricity with simple circuits, but it’s harder to imagine the same concept with water or even the human body. That’s why, under the guidance of our EAST facilitator, Mr. Tiemsin, we decided to create a device that helps teachers show conductors and insulators in a safe, engaging, and hands-on way.
We applied critical thinking to figure out how to design a circuit that could test materials without putting anyone at risk. After brainstorming and experimenting, we developed the Conductor and Insulator Tester. It uses a simple transistor circuit to indicate whether a material is a conductor or an insulator. Because it is powered by only 9 volts, it is completely safe for classroom use.
The project also gave us a chance to collaborate in new ways. One team focused on building and refining the circuit, making sure it worked consistently, while the other designed and 3D-printed a durable, user-friendly casing to protect the electronics and make the device easy to handle. Throughout the process, we learned how to communicate ideas, share solutions, and support each other’s strengths to achieve a common goal.
With this device, we aim to make science lessons safer, more interactive, and more engaging for students. At the same time, it provides teachers with a practical tool to bring abstract concepts to life, helping students understand conductivity in a way that’s fun, memorable, and hands-on.