Bonsai No. 02 · The tools

A notebook that works the problem with you

Write it out by hand, sketch it, or photograph the page from your textbook. Bonsai reads what is actually on the canvas — and can write back onto it.

Try it Draw on the page, then press Next.

Work through it on the canvas. Press Next for a nudge toward the next step, or draw on it yourself.

Scripted for the demo. The real tool has the same five pens plus an eraser, a text tool, image drop, select-and-move, a hand tool for panning, and undo and redo going back over a hundred steps.

Show your working

Most problems worth doing are not typeable. Long division, a free-body diagram, a curve with the area under it shaded, the third line of an algebraic rearrangement where it all went wrong — these are things you do with a pen.

So the Notebook is a canvas, not a chat box. Draw freehand with a pen in five colours, at whatever thickness and smoothing suits your hand. Rub things out. Click anywhere to drop in typed text. Drag in a photo or a screenshot — a page of a textbook, a worksheet, a whiteboard someone photographed badly. Pan around when you run out of room, because you will.

Press Next, get one step

This is the part that makes it a tutor rather than an answer machine. When you stall halfway down the page, press Next.

You get the next step. One step — not a worked solution to the whole question. Press it again when you are ready for the one after that.

It reads the canvas as it stands, including your handwriting and your diagrams, so the step you get is the step that follows your working — not the step that would follow a textbook's. If you have gone down a wrong road, that is what it responds to.

You can also just ask. The tutor sits alongside the canvas, and Ask for help… takes anything from "why does this cancel" to "is line four right".

It can draw on your page

Ask it to label a diagram or mark the step where things came apart, and it adds to the canvas alongside your own working rather than describing where to look in a paragraph of prose.

That is the difference between a tutor sitting next to you with a pen and a tutor on the other end of a phone line.

It tells you when you are done

Finish the problem correctly and it says so, plainly, and stops. There is no upsell to a longer explanation you did not ask for and no invitation to keep the conversation going for its own sake.

Best used for one specific problem at a time — a question from a problem set, a past paper, the worked example you could not follow in class. For understanding a topic in the first place, that is Learn.

The other two tools

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