Math Instruction Online. In Plain Language.

Welcome to the Math Doctor Bob website! Here you can find the master list of all videos at the Math Doctor Bob YouTube channel organized by subject.

Math Doctor Bob Main Channel Page at YouTube

Trig Values for Multiples of pi/5

About Us

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Robert (Math Doctor Bob) Donley holds a doctorate in Mathematics from Stony Brook University and has been cited as Most Influential Teacher by his students.

Past research positions include IAS (Princeton) and MIT, and he is a former Associate of the Society of Actuaries. He also holds a brown belt in jiu-jitsu (Alliance NYC).