Mutual assistance type chemical experiment operation assessment method based on mobile phone video recording

Abstract

The invention discloses a mutual assistance type chemical experiment operation assessment method based on mobile phone video recording. The method comprises the following steps: (1) before examination, for teachers, formulating specific examination contents and recording complete and correct experimental operation videos according to detailed standard contents of examination scores; (2) during examination, mutually recording examination videos by students through mobile phones, and uploading the examination videos to a network learning platform for intelligent watermark generation; and (3) after examination, automatically generating score details corresponding to each segment of experiment content in the video shot by the teacher in the corresponding content of the video shot by the student in a watermark form. According to the method, teachers do not need to demonstrate experiment steps step by step, a large amount of time is saved, scoring detail watermarks of experiment contents ofcorresponding stages are generated in examination video videos shot by students, the students do not need to compare scoring standards independently given by the teachers while watching the video videos, and the scoring difficulty of the students is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of chemical experiment operation assessment, in particular to a mobile phone video-based mutual aid chemical experiment operation assessment method. Background technique [0002] Chemistry courses are compulsory courses for majors in chemistry and chemical engineering, biology, food science, and pharmacy in colleges and universities. Chemistry courses are a highly practical subject. The basic operation training of chemical experiments and the cultivation of experimental skills are very important for learning chemistry well. It has played a very important role, and the effective assessment of students' experimental operation ability is an important measure to improve the quality of teaching. At the end of the experimental class, it is very important to evaluate the students' experimental operation immediately, but the workload of the experimental evaluation is too large, and teachers are often discouraged, so...

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned assessment method still has disadvantages: after the assessment is completed, the teacher needs to demonstrate the correct steps step by step and announce the scoring standards. The situation will seriously affect the accuracy of scoring, and if the students have recorded and recorded the scoring standards after watching the teacher's demonstration, when the students rate the video of the experimental steps, they need to compare the scoring standards while watching the video, As a result, the scoring review process is very complicated, so the assessment and scoring process still needs to be improved

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