Each contestant has been assigned a code. The code consists of the initials of the student's name (as listed on the entry form), followed by a two-digit number. The number is the sum of the reported grade in school and the last two digits of the reported zip code in your address on the form. If there are two codes that are the same, the second letter in the first name will be used. You can request a change in your code for subsequent results by sending an email message with the two letters and two digits you wish to use to Dr. Jorge Alberto Calvo (be careful not to use something already assigned in this list). Contact Dr. Calvo if you cannot identify your code. Each problem attempted was given a score of 0-5 using the following rubric: 5 Completely Correct 4 Essentially Correct with minor flaw or omission 3 Substantial Progress, but with significant flaw or omission 2 Some progress 1 Little progress, but with some valid steps 0 No progress A blank indicates that the problem was not attempted. Final results will be based on both total points earned and total problems solved or essentially solved (as indicated by a score of 4 or 5).