Monday, December 8, 2008

Hello Ladies and Gentlemen:
Did you know that you are a scholar? Yes. it's true that we think of scholars as very smart people who have completed many years of university, but if you go to school, you are a scholar.

Today I gave a handout Graphing,Variations and Formulas. We compared 5 sets of items (ex. Geography mark vs. Hours of Studying) and plotted the points on a labelled graph as a scatterplot. We discussed or reviewed concepts of correlation, independent variable, dependent variable, line of best fit, and scale. Most of the relationships were predictable but some were not.

We spent the first half of the class completing that assignment. We then started a related topic - slope. The slope of a line is basically the steepness of a line. The flatter the line, the closer it gets to 0. We then returned to the graphs we did in the first half of the class and reviewed the slopes of the lines of best fit. Finally, I introduced the concepts of Direct Variation and Partial Variation. They each have a general formula. Direct has the general formula of y = kx and Partial has the general formula of y = kx + F. In a nutshell, the k refers to slope and F refers to the y-intercept (that is the value of y where x=0).

We'll get a chance to review that material a bit on Wednesday in addition to about a half hour of new material. After that we'll review for the test.

By the way, are you planning to come to the big party next week Wednesday evening? There's going to be music and food and the whole school will be in the biggest room. For the real studious types there may even be a review question or two on the board, but I don't want to get too businesslike that night.

If you want to give a private comment or question e-mail me at joe@adult-education.ca or joe706g@gmail.com.

See you soon,
Joe

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