Hands-on tools · The manual
The Oscilloscope
A glowing line that shows a sound. Change it, hear it, and test one idea at a time.
What the line shows
| You see | It means |
|---|---|
| Waves close together | A fast wiggle — a high sound (high pitch). |
| Waves far apart | A slow wiggle — a low sound. |
| A tall line | A loud sound (big amplitude). |
| A short line | A quiet sound. |
| A smooth, square, triangle or saw shape | The same note with a different "colour" of sound. |
The six rooms
- Bench — the moving wave. Start here.
- Meet — tap the crest, the trough, the height and the width to name them.
- Play — turn the two knobs and pick a shape. Press Hear only if you want sound.
- Lab — run a fair test (below).
- Find — match the wave you are asked for.
- Job — a short task to finish and share.
- Lessons — seventeen lessons, one step at a time, each with a worksheet.
The lessons
Seventeen short lessons live in the Lessons room. Each one is a few moves on the real controls; a check appears when the scope sees you did it. Every lesson has a worksheet you can type on or print: the lesson worksheets.
A fair test in four steps
- Pick a question, like "Does a taller wave sound louder?"
- Change one thing. Keep everything else the same.
- Run it three times.
- Write what the data say — one sentence is enough.
Kind to the roomKeep the volume low, or leave sound off. Everything works silently. Nothing is saved or sent.