Please, never use your browser's BACK button in the
  middle of an WebAssign session.  The system is
  designed to only move in the forward direction.

    The way things are set up at this time, you will have
  three opportunities to answer each part of each problem.
  To have your answer graded for a single part of a problem,
  fill in only that part and select

          "Submit Answer"

  If a part has been left blank, no submission is charged
  for that part.  Always use three significant figures in
  your numerical answers (unless the program gives other
  instructions for a particular problem).  Numerical
  answers must be correct to within 2%.  NOTE: You can
  always easily tell the number of significant figures
  by thinking about the number written in scientific
  notation; the form *.**E** has 3 sig figs.

  You will receive 10% bonus HW points for each question
  that you complete more than 48 hours before the
  assignment deadline.

  Approximately 5 minutes after the due date for each 
  assignment has passed, you will find a practice version
  of the assignment available.  You may do this practice
  version as often as you like, but no credit will be 
  given.  The practice versions are found by going to
  "Past Assignments", then opening each assignment.  At
  the bottom of each randomized question, you will find a
  button that allows you to practice the question as often
  as you like.  If the button doesn't appear immediately,
  just click on the answer box for that question.

    Automatic EXTENSIONS are available for each HW
  assignment; you will be able to make the online request
  for an extension after the due date for the assignment
  has passed, and the open window for submitting your
  online request will close 48 hours after the due date.
  Once you have been automatically granted the extension,
  your new due date will be 48 hours after the original
  due date.  You will receive a 60% extension penalty on
  the point values for any parts completed after the
  original due date (all parts completed before the
  original due date will receive no extension penalty).