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Topic: re:Annenburg Math/Sciece list
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David Scott Powell

Posts: 54
Registered: 12/6/04
re:Annenburg Math/Sciece list
Posted: Aug 2, 1995 2:44 AM
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Kent said:

>Looking over the Annenburg list for effective math instruction that Ron Ward
> put out, I would comment on No. 8
>8) Using assessment that focuses on problem solving and understanding RATHER
>THAN memory and speed.
>I would change the "RATHER THAN" to "AS WELL AS" or perhaps "MORE SO THAN".
> I think speed and certain types of memorization are still important.

It says focuses not eliminates. I think that this is an important
distinction. So what is the differnce?

>I'm teaching trig this summer and we do plenty of applications since every
>student at our school is required to take three semeters of college level
>physics. However, I still drill them with daily quizzes. Here's one I gave
>today --no calculators allowed.
>TIMED QUIZ-- 6 minutes, no calculators!
>1) If cos(x) = -1/3 and x is an angle in the third quadrant, find csc(x).
>2) Change the vector (10, 210 degrees) to rectangular form.
>3) Expand cos(A-B).
>4) graph at least one period of y = - | cot(x) | .
>5) If cos(2x) = - .5 then find all, x such that 0<=x<2pi
>6) Evaluate: Arcsin{sin( 7pi/6)} =
>I think these skills are very important in understanding the language of
>trig. I have my students do hundreds of these type problems.

Wow does this sound like a really exciting summer;-) Do they have the
option of doing thousands of these problems? I am sure there future client
will be really impressed with the fact they can expand cos(A-B). Give that
man a bonus!!


p.s. not even a 4 function calculator:-)?

Scott Powell
University of Hawaii
University Labratory School
1776 University Ave.
Honolulu, Hi. 96822

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