The 15 Commandments
I:  Thou shalt read thy problem...carefully.
II:  Whatsoever thou doest to one side of thy equation, do ye also to the other.
III:  Thou must use thy "common sense", else thou wilt have flagpoles 9,000 feet high.  Yea, even fathers younger than sons.
IV:  Thou shalt ignore the teachings of false prophets to do all thy work in thy head.
V:  When thou knowest not, thou shalt look it up; and if thy search still elude thee, thou shalt ask thy All-Knowing Teacher.
VI: Thou shalt master each step before putting thy heavy foot down on the next.
VII: Thy correct answer does not prove that thou hast worked thy problem correctly.  This argument convincest none, least of all thy Teacher.
VIII: Thou shalt first see that thou hast copied thy problem correctly, before bearing false witness that the answer book lieth.
IX: Thou shalt look back even unto thy youth and remember thy arithmetic.
X: Thou shalt learn, read, write, speak, and listen correctly in the language of mathematics, and verily A's and B's shall follow thee even unto graduation.
XI:  Thou shalt not dividest by zero. 
XII:  Thou shalt not seekest an even root of a negative number, (unless thine teacher hath granted thou prior approval).
XIII:  Neither addition nor subtraction shalt thou seekest to distribute an exponent.
XIV: Thou shalt not ignorest thy teacher, failest thy test and whinest on the morrow.
XV:  Thou shalt keep the fourteenth day of the third month holy.
   
Thou shall smite those math students who care not to abide by mine commandments.