Next math review session:
Wed, Oct 23, 2013; W2-198;  4pm-6pm
Topics:
	1. Any questions from students
	2. solving 2x2 linear systems by the matrix inversion method
	3. extracting a square root, by hand.
	4. any basic math questions
	5. factoring--any type.

First math review session:
Wed, Oct 9, 2013; W2-198;  4pm-6pm
Topics:
	basic math.
	operations on fractions.
	factoring numbers.
	extracting a square root.
	others (bring questions)