No new homework was assigned in Wednesday's class. However, students are reminded to read Section 5.1 for Monday's class.
Thanks to Jillianne Whitfield for pointing out that I hadn't posted the final exam date on the course web page. As announced in class, the final will be December 18, 8--10 AM.
In today's class, we discussed Section 4.2 (on identities, properties, and rules), giving some examples and discussing how to prove (using the properties of arithmetic) and illustrate (with pictures, usually involving the rectangular array model) them. We built to a discussion of binomial multiplication and FOIL, and closed with a demonstration of how to multiply many-digit numbers using a limited-precision calculator.
For Wednesday's class, students should read Section 5.1.
Homework for today is Homework Set 18. However, students should change the words ``... as in Problem 7 ...'' in Problem 7 to read ``... as in Problem 6 ...'', and should delete the words ``(written in fraction form)'' from Problem 10(d).
Since we did not have time to discuss the definitions in class, students should read carefully the definitions of expressions, equations, and identities in Section 4.1, making sure they understand the distinctions among the three.
Homework for today is set 16, except for problem 3, and set 17, except for problem 7. In addition to using the distributive algorithm in problem 17.8, students should also draw a picture to illustrate their conclusion.
I have received permission from the instructor for Math 385 in Fall 2005 to make his first exam available on the web site. Although it is hoped that this practice exam will be helpful, no guarantee is given that the length or level of difficulty of this practice exam will be representative of those of our exam.
Homework for Monday (due October 18, after the break) is sets 14 and 15 from the text. Students should also read all of Chapter 4 before October 18.
Homework for Wednesday was homework set 13.
I want to emphasise again the importance of doing the assigned reading before (and after, if necessary) each class. For Wednesday's class, students should read (or reread) Section 3.3 (which we have already begun), as well as Sections 3.4--3.6.
Homework for today is Sets 10--12 from the text.