An Automatic Grading System For a Laboratory Experiment Class

In this work, we present the application of the automatic grading system, Goodle GMS (Grading Management System), to an analytical chemistry lab exercise based on large amounts of experimental data. The lab-case study used to show the potentiality of this grading system is the kinetic determination of furfural, a widely used parameter for food quality control. Goodle GMS is a Web-based application that has been extensively used in engineering courses and, more recently, in analytical chemistry courses, to automatically assist the instructor in the grading process. Goodle GMS allows the students to submit their results to a server via a Web-based form from any networked computer and receive their grade, feedback and an indication of where mistakes were made. The proposed lab example, the determination of furfural, was achieved following kinetically the Winkler´s reaction by photometric measures at 585 nm.