Online Lab Submission
Students:
Instructors:
Virtual Labs:
Pre-Lab Assignments
Interactive Animations:
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Other Problem Types
In addition to the grading of calculations, essays, images, Lewis structure, Organic structures, balanced equations, and values derived from graphs (slope, y-intercept, R2, standard deviation, pH at equivalence points and pka values), there are three more automatically graded problem types that are commonly used by Chem21Labs users: multiple choice, multiple select, and fill-in-the-blank.
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Multiple Choice |
Multiple Select |
Text and/or images can be presented as choices to the multiple choice question. In addition, an image can be included as part of the question. If the question and answers are text (no images), most users will use a dropdown choice box instead of this problem type. Once a choice is incorrectly selected, it is greyed out so it can't be selected again.
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The multiple select problem type is a multiple choice question where there are more than one correct answers. Text and/or images can be presented as choices to the multiple select question. Once a choice is incorrectly selected, it is greyed out so it can't be selected again. |
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Text (Fill-in-the-Blank) |
At times students may need to correctly spell an answer (i.e. naming compounds) and the fill-in-the-blank problem type is employed. The second image shows the feedback given to the student when the incorrect answer, Sulfur dioxide, is entered instead of Sulfur trioxide. The student's answer is graded from left to right and from right to left to provide as much feedback as possible.
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