This day in history

November 18 1820 Captain Nathaniel Palmer discovered Antarctica. 1886 Chester A. Arthur, the 21st president of the United States (1881–1885), died in New York at 56. 1928 Mickey Mouse made his debut in Steamboat Willie.

Cramer’s Rule

Cramer’s Rule is a method of solving systems of equations. There are many methods including substitution and elimination. Sometimes though the coefficients of the equation are ugly. (Ugly isn’t my terminology, it is one given to me by a student.)…

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This year my favorite SAT prep book is the McGraw Hill SAT 2012 with CD ROM. It has great a vocabulary reference area that includes learning word roots, prefixes and suffixes. It has 10 total practice tests. Because it has 2 online tests it really is able to give a “score” for reference that is far better than just taking a test and using an answer key to figure out how you are really doing. It is not a very expensive book and it is worth its weight in gold. It is available at most book stores and also for delivery from many online resources.