SamizdatMath

Are you teaching the quadratic formula to your students? Are you teaching it the same way you learned it in high school? Or maybe college? Or maybe on the street somewhere? Then you're probably teaching it WRONG AF. It's okay: I've been teaching the quadratic formula WRONG AF for decades. I didn't know it, but I was. It wasn't until one day I was working with a group of my college students and made a mistake that I had a realization: we've been teaching the quadratic formula WRONG AF for decades

Here's the task: Put the following fractions in order from least to greatest: 3/7, 1/5, 5/6, 4/7, 7/8, 1/9 and 12/13 Would your students be comfortable doing this task, or would they groan and give up? Would you want your students to attempt this by drawing individual pictures of fractions? Would you want your students to attempt this using a desk full of manipulatives? The first thing you get in this kit is a set of standardized fraction cards that use a hybrid linear model; they are in th