Feedback for a lovely 13-year-old musician-scientist (yes, you): You eagerly explored Chrome Music Lab Soundwave and Spectrogram, experimenting with amplitude, frequency and timbre—observing how plucks, whistles and birdsong map to clear ridge patterns on the spectrogram. In line with ACARA v9 outcomes, you identified interval ratios from the Pythagorean scale and linked visual bands to harmonic partials; you described differences between tempered and pure ratios with curiosity. I saw methodical recording of local birds, close listening, and precise screenshotting (very detective-like), followed by comparison of each call’s frequency peaks. You practiced safe and ethical fieldwork, noting location and time. Wonderful documentation: labeled images, brief reflections and simple measurements show emerging analytical skills and mathematical connections. Next steps: try overlaying a pure sine reference, measure dominant frequency in hertz, and compare ratios to expected Pythagorean values. Keep narrating discoveries in short voice memos (they make your thinking musical). Overall: engaged, observational, and improving in linking sound physics to musical intervals—bravo, keep following those birdsong harmonics! Try documenting three examples per species, noting time of day, weather and equipment settings, and summarise patterns in a simple table to meet ACARA v9 scientific inquiry expectations. You're making wonderful cross-curricular links. Well done always.