Wednesday, February 25, 2009
Term 1 Week 8 (3E1 AM) - Quadratic Function (Max & Min Value)
Completed the section on Monday. Most of the students have difficulty understanding and doing the completed square format y = (x - h)^2 + k. Found out that E.Maths have yet to drill them on this. Students also not so sure about the quadratic graph which they are expected to draw. Found out that they have forgotten about the method to find x-intercepts and y-intercept. Recapped these concepts with them. After another lesson, the students could draw the graph but were not able to write down the max or min coordinate. Spent another 10 minutes explaining again. Seemed like the students do not have the habit of revising by going though the textbook since worksheet have been given to them. This is confirmed after asking the students. Need to come up with an idea to encourage the students to use their textbook more frequently. Still searching for a good idea. Have already taken out the notes in the worksheet for next chapter. What is left is the worksheet questions.
Subscribe to:
Post Comments (Atom)
Completing the square is actually out of syllabus in A Math which I just realised as well. But it is an important concept to learn which may be required in higher mathematics in A level. Hence, we can also train our pupils to use the method of comparing coefficient by letting the quadratic expression be equal to a(x-h)^2 + k. This method is easier for pupils to grasp as they have learnt polynomial identities.
ReplyDelete