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Classroom electronics & micro:bit
Electronics make coding physical: a line of code lights a real LED. You don't need a lab — a class set of micro:bits and some crocodile-clip leads goes a very long way.
Best starting point
The BBC micro:bit is built for schools: it has buttons, LEDs, and sensors built in, programs in a free block editor (MakeCode), and needs no soldering.
Three tiers, by budget and age
| Kit | Good for | Why |
|---|---|---|
| Snap circuits / simple LEDs + batteries | Grades K–5 | Pure circuit concepts, no code, very safe |
| micro:bit | Grades 3–10 | Block coding to real hardware; huge free curriculum |
| Arduino | Grades 8+ / clubs | Text-based coding, wiring, more open-ended |
A first micro:bit lesson (45 min)
- Hand out micro:bits and open makecode.microbit.org — no logins needed to start.
- Drag blocks to scroll a name across the LED grid; download and run it.
- Add a button: "when A pressed, show a heart."
- Challenge: make a step-counter or a dice using the shake sensor.
- Exit ticket: "What did the code tell the hardware to do?"
Cross-curricular hooks
| Subject | Project |
|---|---|
| Science | Log temperature or light with the built-in sensors and graph it. |
| Math | Build a random-number dice or a reaction-time timer; analyze results. |
| PE / Health | Program a step-counter and compare data across activities. |
| Design | 3D-print a case for the micro:bit — ties straight back to your printer. |
Safety & care
Use the recommended battery packs only, never mains power. Keep the small parts counted and stored, watch for choking hazards with young students, and connect and disconnect components while the board is unpowered.