Molsimilarity

Moodle plugin allowing the teacher to ask a chemistry related question by drawing the expected answer. The student will answer by drawing the response.
Moodle plugin allowing the teacher to ask a chemistry related
question in which the expected answer is a chemical structure. The
student will answer by drawing the response. The specificity of the
plugin is that is allows for soft grading: the grade is computed based
on the similarity between the expected and the student’s answer. Thus,
partially correct answers are adequately awarded.
The similarity
between the expected, and the student’s answer is computed through a
REST server. The server software is provided within this plugin, and it
can be configured to fine tune how the similarity measures are computed.
The REST server computes the similarity based on ISIDA molecular
descriptors and Tanimoto coefficient. The teacher has some control over
the way the similarity is translated into a grade, allowing to adjust
the level of exigency of a given question.
Both lone pairs and radicals are taken into account.
Additionally, if the option is selected, and the two molecules to
compare are similar,
the stereochemistry will be also taken into account in the grading
process, thanks to the use of the INCHI.