Precal

**03.24**

Added more ONENOTE notes as PDFs.

**03.11**

Added ONENOTE notes from today to files below.

**12.16.09**

Added files to the file section for u5 polynomials:

u5d1, u5d2, u5d3, and u5d4 are the notes

u5ws1 and u5ws2 are the homeworks; these are the ones that get graded.

u5review is the review

**11.03.09**

HW:

- u2ws4 DUE 11.05.09
- u2ws6, u2ws7 DUE 11.10.09##

**10.30.09**

Take this survey about Tests and Preparation.

Survey

**09.29.09**

u1Test-vectors

HW

- unit 2 ws1A - terms (DUE at beginning of class 10.01.09)
- u1ws1 - interval notation (DUE at end of class 10.01.09)
- print out PARENT FUNCTIONS CATALOG from files below

**09.22.09**

Daily Questions and Vocabulary.

Day 4: (prep for presentation; more practice on non-orthogonal)

41. Who uses vectors? What professionals?

42. By hand or computer-based?

43. Do they have the formulas memorized?

44. Do they use polar or rectangular form? Or both?

45. Are there specific devices for finding magnitude and direction in that field?

46. How so you contact a person in that profession?

48. Can you get them to talk to you about a specific application of vectors?

49. Can you solve the problem they give you?

50. Can you explain the problem to the rest of the class?

51. How do you teach/do math problems?

52. How do you put math stuff in a presentation and make it look professional?

53. Could your professional share some of their "documentation" or text?

54. Can you find/make a video to model the situation you describe?

**09.17.09**

5 non-orthogonal vectors

1. (2i + 5j) + (10i - 3j)

2. (-4i - 10j) + (5sqrt{2}, 45deg)

3. (-10,110deg) + (12,-137deg)

4. (15,27deg)+ (5,110deg)

5. (2,-15deg) + (10,75deg)

Daily Questions and Vocabulary.

Day 3: (non-orthogonal vectors)

29. What if the 2 vectors you're trying to add aren't component vectors? How do you locate the resultant vector, generally?

30. Is it possible to quick check to see if someone else’s answer is reasonable without doing a look of work? Or pick the most reasonable answer out of a list of options?

31. How do you calculate the resultant vector, precisely?

32. Can you "solve" non-rt triangles?

33. Can you model vector situation using non-rt triangles?

34. How do you use the law of sines and law of cosines to solve?

35. If you can't remember the laws, where can you find them? (Internet research)

36. How important is it to memorize formulas?

37. If memorization is important, how long should you be expected to remember them?

38. Who came up with these laws? When?

39. Okay that's beastly. is there a simpler way?

40. When is it more efficient to tear it apart to component vectors and add those up and then convert back to the resultant?

**09.15.09**

TAKS benchmarks. All Precal discussions are suspended. Any Due Dates are delayed one class.

No new homework.

**09.10.08**

u1d2 -basic vectors document DUE 09.15.09

Daily Questions and Vocabulary.

Day 2: (multiple vectors and resultant vector)

13. What happens when you combine forces/vectors?

14. How do you know where the resultant vector of 2 component vectors will end up, in general?

15. Can any vector be written as an addition of component vectors?

16. Why would you want to find the component vectors?

17. What would a good presentation of a professional situation look like?

18. How do you contact someone in a profession that uses vectors?

19. If you emailed, what would you say in the email?

20. What do you think of "Lockhart's Lament" on math education? Math taught as art?

21. Why do we teach arts and sciences 2 different ways?

22. How do sine, cosine and tangent functions help us find component vectors?

23. (B)Can you find sin, cos, tan without a calc?

24. (B)How'd they do it before calc?

25. (B)How long have they been doing sin, cos, tan problems?

26. Given 2 component vectors, can you find the magnitude and direction of the vector precisely?

27. What about subtracting vectors?

28. What about scalars with addition or subtraction?

**09.08.09** Introduce Vectors Project

Passed out scaffolding document, rubrics and artifact list.

Passed out Vectors - Practice1. [Due 09.10.09]

Daily Questions and Vocabulary. (B) denotes breakthrough questions.

Day1: (model motion and what’s a vector)

1. Why would you want to track the motion of an object?

1. Can you model motion of an object onto a diagram?

2. (B)Do you know of any technology that could help in drawing your diagram?

3. What makes the object move the way it does?

4. What forces are acting on the object? When?

5. Does the when matter? Could you put in the forces at different times?

6. What is a vector?

7. How accurately do you depict vectors – magnitude and direction?

8. What tools would you need to accurately depict vectors?

8. Is there a standard notation? Why is it called polar notation?

9. (B)When was it standardized? By whom?

10. What does east of north; north of east; south of east; east of south; west of north; north of west; south of west; west of south mean?

11. Who talks like that?

12. [KEY – this is the project] What else can you model with vectors?