Techniques for a motion-based online interactive platform are described. The platform allows a teacher to visualize motions performed by a student in a perspective and how close the motions are in view of an authoritative instructor (model). Depending on implementation, the platform may be implemented as an application, a Teacher App or a student App. Each may be executed in a computer or control computer associated with an instructor or teacher or computing devices associated with students. Each of the computing devices is coupled to or includes a camera, where the camera is used by a student to show his presence or poses he performs. Data streams from the computing devices are received in the control computer.