Online Lab Submission
Students: Instructors: Pre-Lab Assignments
Interactive Animations:
     

Other Problem Types

In addition to the grading of calculations, essays, images, balanced equations, and values derived from graphs (slope, y-intercept, R2, standard deviation, pH at equivalence points and pka values), there are four additional automatically graded problem types that are commonly used by Chem21Labs users: multiple choice, multiple select, fill-in-the-blank and unordered text.

   

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.

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.



Text (Fill-in-the-Blank)

Unordered Text

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 for incorrect answers.

This problem type is used when there are mulitple answers and the order is not important.
Draw all the isomers of . . . .
Draw the resonance structures of . . . .