Today we started Chapter 11. We covered the following:

11.1 Ratios and Proportions

11.2 Percent

11.3 Direct and Inverse Variations

For proportions and percents, students found them pretty easy to understand. Indeed they have encountered such concepts before and already have a good handle on them. The only thing I want them to keep in mind is that when solving proportion equations, be sure that any answer does not make any denominator zero.

For direct and inverse variations, initially some students found them confusing. We went the definitions over and over with examples. Basically variations talk about relationship between two variavbles x and y. For direct variation, there exists a constant k, such that y/x = k. For inverse variation, there exists a constant k, such that xy = k.

It is registration time for Fall semester. For students who have successfully completed this course, they can move up to Math 8, for Algebra II.