Teaching ·
How to draw an isometric drawing, step by step
Draw a cube, a cuboid and a circle on isometric paper, starting from the nearest corner and counting units along the grid. With the mistakes to watch for.
Blog
Practical guides for tutors, teachers and students: teaching and learning maths on digital paper, and getting the most out of Kallydo.
Tutoring ·
How much to charge for online tutoring
What tutors are actually paid, what tutoring platforms keep, and a simple way to work out an hourly rate for online lessons that covers your preparation time.
Tutoring ·
Online tutoring after you retire from teaching
A practical guide for retired teachers starting to tutor online: platform or independent, the equipment you need, moving your lessons online and setting a rate.
Tutoring ·
How to start an online tutoring business
A step-by-step guide to starting an online tutoring business: choosing what to teach, pricing, the admin, your teaching setup and finding your first students.
Tutoring ·
Microsoft Whiteboard is retired: what replaces it
Microsoft retired the standalone Whiteboard apps on 16 October 2026. What replaced them, what happened to boards, and a page-based alternative for lessons.
How-tos ·
How to organise your lessons into folders
Set up folders by class and topic in Kallydo, put folders inside folders, add lessons where they belong, and move a lesson that ended up in the wrong place.
Company ·
Why we built Kallydo
Kallydo is an online whiteboard built around the paper a teacher would hand out. Why it uses pages instead of an endless canvas, and what we chose not to build.
How-tos ·
Export a whiteboard page as a PDF or PNG
How to export a Kallydo page or a whole document as a PDF or PNG, which option to choose, and where the file goes so you can send it to students.
How-tos ·
Free online graph paper: draw on it or print it
Draw on graph paper in your browser for free, with no sign-up, or download printable graph paper PDFs in A4 and US Letter, with or without axes.