Post 12, November 11, 2010.

• What has been the most difficult topic so far this year? Why? Do you understand it now?

The topics that have been the most difficult, or most confusing, for me so far in math class are the ones about Logic (lesson 2-2) and Conditional Statements (2-3). In the topic of Logic, it talks about truth tables, conjunctions, disjunctions, and the Venn diagrams. What I don't have very clear is the part about the Venn diagrams and how they are used to solve a problem like the ones you included in the exam. For example, "A travel agency surveyed a group of 215 high school students. The survey results showed that 86 students have been to Mexico, 106 have been to Canada, and 59 have been to both. Draw a Venn diagram to represent the data." Of course, in the exam I got this question wrong because I didn't know what to do. In the topic of Conditional Statements, I don't understand the part about logically equivalent statements, contrapositive, inverse, and converse statements. I still don't understand these topics.