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Elton Lin
Directly ask for explanations about linear algebra, algorithms etc. from "youtube teachers". This combines the clarity of an in-person explanation with the efficiency of async communication, and is much cheaper - $10/month instead of hourly private tutoring.
explanations.app
explanations.app
Low-cost group tutoring made possible by blackboard videos
Elton Lin
Besides from minimizing the effort it takes to teach, any blackboard explanation can be turned into a lightweight, fileless video with 5-200x less memory than traditional videos.
Looking for product feedback - it's ready to use anytime.
Explain
Explain
Open education with crowdsourced blackboard videos