A no-app modern-based technical support system that is specifically designed for busy Teachers ... who don't have time to learn (and remember) technical details.
e.g. ETDRI uses its custom animation clips and Smartphone QR-codes, for readers to obtain details

Sample click here MIDI Piano Lessons The Step-by-Step animated lesson is easy for busy teachers to learn to teach Animation Style Sample click here https://etdri.ca/221117p0500.mp4 Professor missed the bus expression Lesson Sample click here https://etdri.ca/221011p1130.mp4The Swing lesson is easy for busy teachers to learn to teach. About ETDRI Professors Humour Typical Humour in Engineering Circles LipSync: Example of Draft of '2 panel'

Also Falling down stairs (at Graduation Event) animation see https://etdri.ca/230108.mp4 to demontrate live action.

https://etdri.ca/CoolBuskersTrainSingers/