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Monday, February 06, 2006

Day#1 Scribe

This is Van, and I'm writing the first scribe for Precal40. It's most likely going to look bad, but at least I tried, and Mr. K tried helping me. So here I go

In our precal40 class, period 2, Mr.K discussed and asked, why there are 360 degrees in a circle and why couldn't we use a different number instead of 360?. Teddie says "100", because it's a more natural number. Mr.K agrees, but then says "it's actually 400 degrees in the whole circle. The british liked your idea so much, they did that. They would be "gradians". So anyone else going to give an answer? No? Okay, let's see how many numbers divide from 360 evenly."
1,2,3,4,5,6,8,9, 10,12,15,18,20,24,30,36,40,45,60,72,90,120,180,360.
So that's probably why. Then he said something about some greek civilization that had base 60 and we have base 10, and that's probably why seconds, minutes are in 60's. So, Mr. K draws a nice circle and is impressed with it. Everyone agrees. A damn good circle (sorry if that counts as a swear). So, Mr. K draws the radius and asks for a volunteer to come up, stretch their hand as wide as possible. So, Marc comes up and volunteers. Marc gets his own measurement of his hand width strentch. Called "MARC" units. Mr. K goes, "that's some nice unit we got there, Marc units. Oh boy." So, he takes a towel, and measures the radius with it. He gets that length and wraps it around the circle. So, 3 times it's almost halfway around. He stops and says "see that little amount there?, that's the remaining decimal part of Pi. 3.14 yada yada, and that number continues on this very day!". He says "Sorry Marc, you had your time" and erases the MARC units. So, Mr. K goes on, and that, 180 degrees is equal to Pi radians. Because, Pi is, how many times the radius is used, till it reaches half across the circle going around. So he goes on to discuss Pi and it's relation with Degrees.
π/6 radians = 30 degrees
π/4 radians = 45 degrees
π/3 radians = 60 degrees
π/2 radians = 90 degrees
2π/3 radians = 120 degrees
3π/4 radians = 135 degrees
5π/6 radians = 150 degrees
π radians = 180 degrees
7π/6 radians = 210 degrees
4π/3 radians = 225 degrees
3π/2 radians = 240 degrees
3π/2 radians = 270 degrees
5π/3 radians = 300 degrees
7π/4 radians = 315 degrees
11π/6 radians = 330 degrees
2π radians = 360 degrees

Mr. K then gave us a formula that looked like this

D/180 = θ/π

Where D is the degrees and θ is Radians

To convert from degrees to Radian and vise versa, plug in the numbers.

That was the morning class.

The afternoon class, was merely to write into our math dictionaries and practice a few questions for the conversion.

So, that's all I got to say. And the person I feel like picking on to do the next Scribe is Calvin!, Have fun!. And btw, this took me 45 minutes to do. (not kidding). Sorry if it was long and boring, but I did my best. And most likely some of the things I said were probably false, but oh well. Enjoy people!



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2 Comments:

At 2/07/2006 10:43 AM, Blogger Mr. Kuropatwa said...

Van, this is a great first scribe! I really like the conversational tone and your use of humour makes it interesting to read.

Well done!

On to Calvin to take it to the next level .....

 
At 2/07/2006 3:55 PM, Blogger Hobo said...

Thank you Mr. K

 

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