Lastly, under no circumstances are you permitted to touch any station. If you touch a station, and it is altered, students coming after you will see something different, and now the "playing field" is uneven! Do not touch any material.

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After you have finished the exam, you will not be permitted to go back to any station. If there is a question you want to ponder a little longer, write notes in the margin of your exam, and when you are at a less challenging station, reconsider the previous station.