In our second meeting we look at aspects to visualize algebra One page summary [PDF]

Google today animated the quadratic equation with a picture. This is a nice illustration showing how useful the quadratic equation is, like finding the position where a basket ball hits the ground. There is a tendency in K12 education to overthink the quadratic equation at first. Yes there are thousands of aspects to it, but the key is that there is an explicit formula for the roots of a quadratic equation a x2 + b x + c in the complex plane and that these solutions are real if b2-4ac ≥ 0.