Wednesday, November 5, 2008

ANGEL "Issues" (Bugs?)

Here are a couple “issues” we’ve reported to ANGEL Tech Support:

  1. Tokens don't work in some areas of a course, while they do in others. For instance, they don't seem to work in Announcements, About This Section, on the Course Map, or within any feature that opens in a new window.
  2. In the algorithmic question type in Assessments, ANGEL is calculating natural logarithms incorrectly. As near as we can tell, ANGEL is rounding the argument before calculating the natural log. This error appears to be happening with all three versions of logarithms (log, ln, and log10) supplied by ANGEL.

    For instance, Angel is saying that the answer to the natural logarithm of 1.49 is 0. The correct answer should be 0.39878. However, the natural logarithm of 1 is 0, which fits the hypothesis that ANGEL is rounding the argument (1.49 in this case, rounded down to 1) before calculating the logarithm.

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