Online Whiteboard for Math — Free, No Sign-Up

Why Graph Paper Changes Everything

Math drawn on a blank canvas drifts: axes go crooked, fractions misalign, and coordinate plots become guesswork. Graph paper fixes all of it at a glance. pairPaint's page settings let you switch any page between graph, ruled, dot-grid and numbered paper backgrounds — per page, anytime — so the board always matches the topic: graph paper for coordinate geometry, ruled paper for long division and aligned working, dot paper for isometric sketches.

Because the paper is part of the page itself, it exports and prints faithfully — a worksheet plotted on graph paper comes off the printer on graph paper, ready to hand out. Students working at home see exactly the same grid their teacher used in class, which removes a surprising amount of confusion from homework.

Teaching Math Live: Geometry, Fractions and Graphs

Project pairPaint onto your classroom display and teach the way math wants to be taught — by drawing it. Sketch triangles, circles and angle diagrams with the 18 editable vector shapes, snap arrows onto number lines, and label everything with the text tool so it reads from the back row. The highlighter emphasizes the key step in a multi-step solution without redrawing anything.

Fractions come alive when you shade them: draw the circle, flood-fill three quarters of it with the bucket tool, and the abstract becomes visible. Plot points on the graph background one by one as the class calls them out, then connect them to reveal the line. Because undo is unlimited and the canvas autosaves, a wrong stroke vanishes instantly and yesterday's board is still there for today's follow-up lesson.

Student Practice, Collected in One PDF

Watching one student solve at the board tells you nothing about the other twenty-nine. In Creator mode, every student gets their own canvas on graph paper while you watch live thumbnails of all thirty solutions forming at once. "Plot these five points." "Shade two-thirds of the rectangle." "Show your working for question 4." You see every answer — including the ones that would never get a hand raised.

Draw a correction arrow directly onto a struggling student's canvas, push the model solution to everyone with one tap, then collect the whole class's work as a single multi-page PDF — one A4 page per student — ready to mark, file, or share with parents. It is formative assessment at the speed of drawing.

On the Roadmap: Protractor, Ruler and More

Honesty matters: pairPaint does not yet have protractor or ruler tools. They are on the roadmap, along with more math-specific templates — and for most classroom geometry, the 18 vector shapes, arrows and text tool on graph paper already cover the need. What exists today is a fast, free, no-login math whiteboard that runs on the devices your school already owns; the measuring tools are coming next.

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