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blackpenredpen is a math tutorial channel using a black pen and a red pen on a whiteboard, aiming to inspire students.
Calculus and other math worked out by hand on video, with a teaching focus.
The video list holds math tutorials worked out on a whiteboard, with calculus among the main subjects. The brief names the black pen and red pen method as the channel's signature, so each step of a problem shows as it develops.
Visit linkblackpenredpen is a whiteboard math channel built on handwritten working. The black pen and red pen method gives the channel its name and its visual signature, so each step of a problem stays visible as the solution develops. Calculus is the core subject the brief names, and the videos teach by working problems out in full. The stated aim goes beyond the mathematics: the channel is meant to inspire students to work hard and believe they can do difficult things.
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