Project 15 - Magnet Bell "K-12 JUNO STEM KIT"

What You Can Build Using K-12 JUNO STEM KIT

In the "Magnet Bell" project from the K-12 JUNO STEM Kit, children get hands-on as they assemble a simple circuit where a buzzer is activated by a reed switch and a magnet. When a magnet moves close to the reed switch, the circuit closes and the buzzer sounds—just like a magical, touchless bell! This project elegantly demonstrates how magnetic fields can be used to control electronics without any visible buttons or moving parts.

What You Can Learn

• Magnetic Sensing: Kids discover how a reed switch responds to the presence of a magnetic field, allowing current to flow only when a magnet is nearby.

• Basic Circuitry: Learners connect a battery, reed switch, and buzzer in series, reinforcing core concepts of circuit completion and switching.

• Contactless Control: By using the reed switch, children experience how switches can be activated without physical touch, as seen in security systems and automatic doors.

• Reading Diagrams: Students gain confidence reading basic circuit diagrams, including symbols for switches, buzzers, and power sources.

Real Life Problem Solving

• Troubleshooting: If the bell does not ring, learners practice checking the reed switch position, magnet proximity, and circuit connections, building systematic problem-solving habits.

• Device Understanding: The project models systems such as magnetic door alarms and motion-triggered alerts, showing practical uses of reed switches.

• Design Thinking: Learners can experiment with magnet strength, placement, or use the concept for creative sound-based projects.

Additional Benefits

• Creativity: Students personalize their bell by decorating it or integrating it into models, crafts, or alarm systems.

• Collaboration: The Magnet Bell project encourages teamwork through shared assembly, testing, and design brainstorming.

• Confidence: Successfully building a magnetic bell circuit boosts self-assurance and sparks interest in electronic sensing and automation.

• Foundation for Future Learning: This project introduces principles behind contactless switches, paving the way for sensor-based projects and smart devices.

Why Magnet Bell Matters

The Magnet Bell project turns invisible magnetic forces into real, audible action, making science tangible and fun. By blending hands-on building with the intrigue of contactless control, it fosters curiosity, critical thinking, and a deeper understanding of how everyday smart devices work. Every chime of the magnet bell is a celebration of discovery!

With Project 15: Magnet Bell, every child gets to ring in their STEM journey—no hands required!