General

Scratch canvas

A blank page for sketches and working.

For checking your work after you’ve tried it yourself.

Step 1:
Pick a tool

Pen, shapes, polygons, text and more.

Step 2:
Draw

Choose colours and widths; Select moves and resizes anything.

Step 3:
Save it

Save as picture, since nothing is kept between visits.
What it does.
A blank page for sketches and rough working: freehand drawing, lines and arrows, rectangles, circles, ovals, polygons with movable corners, text, fills and pictures.
When it helps.
Drawing a diagram to check your reasoning, or sketching before you write up.
What it won’t do.
It doesn't measure or calculate anything, and nothing is saved between visits.
Example.
Draw a polygon, then drag its corners to try different shapes.
Width
Paper

Draw freely.

Not saved between visits. Save as a picture to keep it.