TCEA TechNotes. This website, Math Whiteboard, was designed by math educators to provide a collaborative way to experience mathematics principles. They looked at research on the best ways to learn math and applied them in creating their math tool. And did I mention that it’s completely free for teachers, tutors, and students, always and forever?
Math Whiteboard is web-based and runs on any browser. So there is no software to install. It has a keyboard interface for entering math notations on your computer keyboard or via the virtual keyboard, or you can use a touch screen.