June+4,+2008

Dear Sub.

Thank you for being here today. The plan for first and second period is listed below. Seventh period, I have two students in D112. They can work on review for their math final or they can work on math homework in their regular math class.

1. Take attendance. Just pass around a sign in sheet in each class and leave them on my desk. 2. Go over last night's homework. The answers are in the following file. 3. Have students copy down that HW93 is page 567 23-37 odd. 4. Have students watch the following clip on computing a midpoint. You will have to pause it at times to allow them to take notes at times. Try to scroll this window so that most of the clip is visible when watching it. You can hit F11 to maximize screen size. Hitting F11 again returns you to normal mode. **While this is going in in period one, have Jillian Altomare or Christian Lamar handout progress reports for that class. Similarly, in period two, have Valerie Wallach or Hayley Howard handout grade reports for their class. They should be on my desk. They may be in one stack.**

media type="custom" key="820759"**
 * Midpoint Formula

Scroll down for the answer to the problem described in the last moments of the above video when kids finish the example problem. =midpoint is (-1/2, -5)=


 * Distance Formula**

5. Have the students watch the following clip on the distance formula. Have them take notes. They should write down the formula and the example that he is doing on the board.

media type="youtube" key="xHPRN4iMhPY&hl=en" height="344" width="425"

6. Have the students find the distance between the following two points.


 * (3,-2) & (-1,5)**

Watch the following video to verify their answers. media type="youtube" key="910e77GyyCk&hl=en" height="344" width="425" 7. Have the students start their homework. The first couple problems are listed here.

Find the distance between P and Q and the coordinates of M, the midpoint of segment PQ. Give exact answers and approximate answers where appropriate rounded to the nearest hundredth.

23. P(-5, -2) & Q(-5, 5)

25. P(-3,-4) & Q(5,-5)

27. P(5/2, 3) & Q(-3/2, 2)

29. P(10,2) & Q(8,0)

31. P(2sqrt(2), 5) & Q(sqrt(2), 0) 2sqrt(2) is read "2 times the square root of 2" or "2 root 2"

33. P(3/2, 1/4) & Q(-6, 3/4)

35. P(2sqrt(2), sqrt(7)) & Q(sqrt(2), 5sqrt(7))

37. P(2a, a) & Q(a, -3a)