Our January 13, 2009 PSSA math challenge problem winner is Cindi Gil. Since this was multiple choice, Cindi did a quick approximate measurement of one side of the regular (all side lengths are equal) hexagon at about 3 cm. Since there are 6 sides in a hexagon, Cindi added six 3's to get 18 cm for the perimeter. She picked the closest answer since her initial measurement of one side was only approximate.
Our January 9, 2009 PSSA math challenge problem winner is Odell Anderson. Odell solved a classic probability problem of random selection without replacement. To help him visualize a solution, Odell drew an illustration of the marbles after the 1st pick pulled a green marble (left on outside of box) and the remaining green and red marbles on the inside of the box during the 2nd pick.
Our January 7, 2009 winner is Melissa Epps. Melissa simplified an expression by substituting a value for the variable. This was a challenging problem because it involved negative integers with powers (exponents).
Brainyflix is offering $600 in prize money for the top SAT Vocabulary video. Submit your videos by March 16, 2009. This contest is open to students nationwide and is being sponsored by a group of MIT alums who are trying to make SAT Prep fun and free for all. See SAT word list here.
