John Moser
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John Moser created a post,
Algebra 2 add quadratic function roots method
Add a video to the Algebra 2 course for finding the roots of a quadratic function. f(x)=6x^2-7x+3 f(x)=6(x^2-7/6x+3/6) f(x)=6(x^2-7/6x+1/2) p=-7/6 q=1/2 (-p/2+u)(-p/2-u)=q (7/12+u)(7/12-u)=1/2 (7...
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John Moser commented,
There's no such thing as neutrality; you also assert that these things aren't school subjects. Part of the purpose of school--the larger purpose, in fact--is to socialize students. You could have ...
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John Moser commented,
Henry, doesn't that imply that Khan Academy should be neutral to racism, sexism, and slavery? Are you suggesting that rape is okay as long as a religion believes it's good, and we should avoid taki...
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John Moser commented,
Differential calculus, then Integral calculus. Khan Academy has like 5 different Calc 1 courses, so it's confusing. Calculus AB/BC will not prepare you for…anything. Well, except Calc 1 in colleg...
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John Moser commented,
It's a computer division algorithm that's fairly fast, problem being charging up the look-up table is slow, and you need to complete the q-digit lookup before you can start adding, multiplying, and...
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John Moser commented,
Wait until you see Sweeny-Robertson-Tocher division. I actually figured out how to do it without a look-up table—a 60-year-old problem everyone's been trying to solve, took me 2 hours, they were th...
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John Moser created a post,
Mastery never seems to go down
I keep studying topics on college algebra and testing well the day I study them, then completely failing out 2 days later. If I get the questions right ONCE, my course level mastery level bumps up...
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John Moser created a post,
Horner's Method for polynomials
In the algebra courses, can you add a video covering Horner's method? It's easy to convert from standard form. f(x)=3x^4+16x^3+7x^2+12x+15 This can be rewritten by adding some parenthesis and remo...
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John Moser commented,
Can you put the name of the course in the subject line so people can see what it is without opening the post?
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John Moser created a post,
Discrete math - Links to all requests over the years
Discrete mathematics has been requested a great many times, but no such course has been created as of yet. Discrete mathematics is generally the third computer science course in a university progr...
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