Free Online Whiteboard for Maths — Draw Equations, Graphs & Geometry
Teach and learn maths on a free digital whiteboard. Write equations, sketch graphs, draw geometric constructions, annotate textbook diagrams, and export worked examples as PDF — no account, works on any device.
Why Maths Teaching Needs a Drawing Canvas
Typed text and slide tools cannot replace a working drawing surface for maths.
Maths is fundamentally visual. A worked equation needs margin annotations. A geometry proof requires accurate diagram construction. A calculus explanation uses a hand-sketched curve with gradient annotations. A statistics lesson needs a hand-drawn normal distribution. None of these translate well to text or to pre-built slides — they require a drawing surface.
OnlineWhiteboard.org gives teachers and students a free digital canvas that behaves like a whiteboard in a classroom — but accessible anywhere, saveable, and exportable. Write equations across the full canvas width. Draw a circle and inscribe angles. Sketch a parabola and annotate its vertex and intercepts. Export the complete working as a PDF revision sheet for students.
Maths Topics — How the Whiteboard Helps Each One
Specific applications for common maths topics across all levels.
Algebra — Equations and Working
Write multi-line algebraic working with the pen tool, keeping each step on its own line. Circle terms that cancel, annotate what you are doing at each step, and box the final answer. More natural than a text editor.
Geometry — Constructions and Proofs
Draw triangles, circles, and polygons with the shape tools. Use the pen to add angle arcs, congruence marks, and proof annotations directly onto the geometric diagram.
Graphs and Functions
Enable the grid background and sketch function curves with the pen tool. Label intercepts, turning points, and asymptotes with the text tool. Annotate transformations of known functions.
Number — Fractions and Number Lines
Draw number line segments and fraction bar diagrams with the rectangle and line tools. Annotate unit fractions, equivalent fractions, and ordering comparisons.
Calculus — Integration and Differentiation
Sketch curves and shade areas for integration problems. Draw tangent lines at points with the straight line tool and annotate gradient values for differentiation.
Statistics — Distributions and Charts
Hand-sketch normal distributions, box plots, and histograms with the drawing tools. Annotate mean, standard deviation, quartiles, and outliers directly on the diagram.
Matrices and Vectors
Write matrix notation and vector diagrams with the pen and text tools. Draw vector arrows with the arrow tool and annotate components and resultants.
Annotate Textbook Diagrams
Upload a photo or screenshot of a textbook diagram and annotate it live — circle key features, add missing labels, mark errors in student work.
Export Worked Examples as PDF
Export each lesson's worked examples as PDF. Build a library of revision sheets students can access before exams — better than photos of a physical whiteboard.
How to Run a Maths Lesson on the Whiteboard
Prepare, teach, and share — a complete teaching workflow.
Prepare Boards Before the Lesson
Create one board per topic or example type. On each board, write the problem or draw the starting diagram. Leave blank space for working. Save the board set before class starts.
Teach Live — Draw and Explain
Share your screen during an online lesson or project the whiteboard in the classroom. Draw working step by step, annotate diagrams, and use sticky notes to highlight key results or formulas.
Export and Share Revision Materials
At the end of the lesson, export each board as PDF. Upload to Google Classroom or your LMS. Students have a clean PDF record of every worked example from the lesson.
Frequently Asked Questions
Can I write proper mathematical notation on this whiteboard?
Equations are best written with the pen tool for a natural handwritten feel, or the text tool for printed-style notation. There is no built-in LaTeX renderer — for complex symbolic notation, write freehand with the pen.
Does the grid background help with graph sketching?
Yes — enable the grid background in canvas settings to use the grid as a coordinate reference for sketching functions and geometric constructions. See online graph paper guide →
Can students use this whiteboard for maths homework?
Yes — students open onlinewhiteboard.org in any browser and can draw their working, take a screenshot or export as PDF, and submit it. No account needed.
Does it work on school Chromebooks and iPads?
Yes — works in Chrome on Chromebooks and Safari on iPad. No installation needed. See Chromebook guide → See iPad guide →
Is there a dedicated maths drawing mode?
The whiteboard is a general-purpose canvas — there is no specific maths mode. The combination of pen tool, shapes, text, grid background, and image upload covers the full range of maths diagram needs.
Can I use this for private tutoring sessions?
Yes — open the whiteboard and share your screen during a Zoom or Meet tutoring call. Draw problems and worked solutions live. See tutors guide →