To all my students:
The Xmas online exam has been posted on CastleLearning website. For Chemistry 1 and Earth Science 1 classes, there would be 60 multiple-choices questions in the exam with Open Format (multiple-sessions and clue permitted). For Earth Science 3 class, the number of questions would be 80 multiple-choices questions (same format). This assignment is mandatory and will be due by Monday Jan. 4, 2016.
Have a safe and happy Christmas break!
Dr. Liu
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