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Monday, November 14, 2005

Intro to Geometry - Nov. 14, 2005

Hello everyone! This is the first scribe post for our new unit on Geometry!

Today's class was spent reviewing some things about geometry we've already learned (like how to find the volume of a retangular prism) and then learning some new things (like the formulas for the surface area and volume of a sphere.)

At the beginning of the class, Mr. K put up eight questions for us to solve.
The first of these questions involved "plugging in" number values for variables (ex. a = 2, b = 3, c = 5 so... abc + 2ab = 42.)
The next questions required us to find out the value of variable (ex. x^2 + x^2 = 72 so.... x equals 6.)
The last of the questions were about solving the volumes and surface areas for a rectangular prism and a cylinder.

Next, Mr. K. explained the "baseball theorem" to us. This theory explained why the surface area formula of a baseball (also known as a sphere) is 4(pi)(r^2).
Lastly, he explained the volume formula for spheres, which is: 4/3 (pi)(r^3).

Our homework for tonight is Exercise 23...yes, the whole thing.
The scribe for tomorrow will be.....
nee-cole !!


At 11/14/2005 9:37 PM, Blogger Mr. Kuropatwa said...

Great graphic Kim!

BTW, the volume of a sphere is:

V = (4/3)πr^3

At 11/17/2005 11:38 AM, Blogger MrsASmith said...

I am impressed by your graphic! I teach middle school in Alabama and was referred to Mr. K.'s blog through a mutual friend. He is doing great things in his class, isn't he? How do you feel about blogging as an assignment and using computers for class so much?

At 11/17/2005 4:21 PM, Anonymous Anonymous said...

It's coooOOl!

At 11/17/2005 9:02 PM, Blogger John D. - #12 said...

I think it's really cool, blogging as an assignment and using computers for class. I mean, we're in a really hi-tech era, technology is advancing so fast, and I think we should use technology as an aid in our studies.


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