Today JPaul and I learned how to apply the Quadratic formula to solve quadratic equations. This is a review from Algebra 1, however JPaul said he has never seen the formula. So we Youtube'd a silly video/song to help him remember the formula. Then we looked at skill based questions. I reminded JPaul in order to use the formula, the equation must be set = to 0 first. He identified a,b,and c and was able to substitute their values into the formula and simplify correctly. Next, we looked at application problems. I showed JPaul how, if a golfball is hit and follows trajectory of a parabola upside-down. I explained to him where each coefficient comes from and how it affects the equation. We used the formula to find how long the ball is in the air for.
JPaul was significantly late this morning. We did not have time for a new lesson so we reviewed completing the square problems. I checked his homework, which he did well on. Then we practiced how to solve quadratic equations using the completing the square method. I asked JPaul how he feels about them. He said it's just a matter of memorizing the process (which I agreed with). Also, when there are fractions in the equation, it makes it one notch harder, but working slowly helps to ensure no erros are made.