The standard form of a quadratic is . Most students understand the effects of a and c on the graph of the parabola, but what does b do? I hinted at this problem earlier, but just created and uploaded a GeoGebraTube Web document to model the problem.
In class, that’s about all I give before releasing my students to explore on their own. As always, my students are required to do two things: state their conjecture and prove that it works.
Results from my students coming in a future post.