John Moser

1. Communauté
2. Content Requests and Feedback

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...

1. Communauté
2. Feature Requests and General Site Feedback

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...

1. Communauté
2. Content Requests and Feedback

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...

1. Communauté
2. Content Requests and Feedback

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...

1. Communauté
2. Content Requests and Feedback

In the Calculus AB course, Limits and Continuity, there is a video on limit of sin(x)/x. This is an important function, called the sinc() function.  It would be nice to add a separate video discuss...

1. Communauté
2. Content Requests and Feedback

Khan Academy should use higher-tech mathematics methods, such as soroban and anzan math for basic arithmetic.  That includes rapid, registered addition (soroban uses the same operation to compute e...