[shatteredspace]

I dropped off earlier than 45%, somewhere around 25%. It is about deriving the quadratic formula, not about 'what's a root'.

What's a root could be a link you click on to give more information than a special x value when both side of the equation line up (a root is when the graph of a function crosses the x-axis).

I like imagery and the clicking to progress to the next portion. What would be fantastic in my opinion is to take the step-by-step approach of something like WolframAlpha and apply it to defined topics with a set of defined examples rather than hey provide us an answer and if you get it wrong we will take you through a rudiment branch that will take us back to the main branch.

[jamesfisher]

Yeh, I think I tried to pack too much into the lesson. "What is a root" could be more like a prereq lesson.

WA's step-by-step feature is amazing dark magic. I'd love to replicate that somehow ...