Sunday, February 15, 2009

Math And Science

Hello Everybody! I hope all is well! In Fe7B, I know for a fact that all is well because we have just started a new Unit in math! Patterning and Algebra. This great unit is a great challenge for the brain! Right now, we have been focusing on problem rules. For example: 1,2,3,4,5,6,7,8,9,10. This rule is: Start at one. Add one number to each term every time. Also, we have been trying to find patterns within terms of patterns to find the next term in that one pattern. Here is an example of what class Fe7B has been exposed to:
99 x 11= 1089
99 x 22= 2178
99 x 33= 3267 - Find the next 6 terms in the pattern.

In these terms, we can see that the thousands digits are increasing by one each time. We can see that the hundreds digits are increasing by one each time as well. Also, the tens digits are decreasing by one each time. Finally, the one's digits are decreasing by one each time as well. We can now figure out the next six terms in the pattern.
99 x 44= 4 3 5 6
-1 -1 +1 +1
99 x 55= 5 4 4 5
-1 -1 +1 +1
99 x 66= 6 5 3 4
-1 -1 +1 +1
99 x 77= 7 6 2 3
-1 -1 +1 +1
99 x 88= 8 7 1 2
-1 -1 +1 +1

As for science, class FE7B has been continuing with our experiments. But,have now recently have reported how our hypothesis were related to our observations. Here is an example of two powders that Fe7B experimented with:
With the unaided eye Powder Number 1 appeared to be consisted of thick and large individual particles. The attraction between the particles was very strong due to the size. When mixed with water, the powder particles were able to attract each other much easier causing the attraction of the water to be minimal. This then caused the strongly attracted powder to clump and become heavier than the water, sinking to the bottom of the test tube. Also, a new form of matter was formed by the trapping of air particles with the liquid. The mixture had three properties causing itself to be heterogeneous.
With the unaided eye Powder Number 2 appeared to be consisted of small, thin and smooth individual particles. The attraction of particles was very weak due to the size. When mixed with water, particles held no attraction to each other and quickly became attracted to the water. This caused the powder to separate evenly throughout the mixture and dissolve after one minute of shaking. The mixture had only one property causing itself to be a solution or a homogeneous mixture.
I'll blog soon!

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