Year 4 Computing: Using micro:bits to Investigate Noise Levels

This week in Year 4 computing, pupils used BBC micro:bits to investigate a real‑life question: Which is the quietest classroom in Key Stage 2? The children programmed their micro:bits to work as noise meters, developing their understanding of inputs, data, and outputs.

As part of the challenge, pupils extended their programs so the micro:bit could record the maximum volume level it detected. They then coded the device to display this maximum reading as text on the LED screen when a button was pressed. This helped pupils think carefully about variables, accuracy, and how data can be stored and retrieved.

Once their programs were complete, pupils collected sound readings from different classrooms around KS2 and compared their results. The lesson encouraged teamwork, problem‑solving, and thoughtful discussion about fair testing.

Year 4 showed great enthusiasm and resilience, applying their coding skills to answer a meaningful enquiry question using technology.