An Intelligent Interface for Automatic Grading of Sketched Free Body Diagrams
An Intelligent Interface for Automatic Grading of Sketched Free Body Diagrams
复制标题
草绘自由体图自动分级的智能界面
DOI:
10.1145/3379336.3381471
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Hammond, Tracy
中科院分区:
文献类型:
--
作者:
Runyon, Matthew;Williford, Blake;Linsey, Julie;Hammond, Tracy
Sketching free body diagrams is an important skill that students learn in introductory physics and engineering classes; however, university class sizes are growing and often have hundreds of students in a single class. This creates a grading challenge for instructors as there is simply not enough time nor resources to provide adequate feedback on every problem. We have developed an intelligent user interface called Mechanix to provide automated, real-time feedback on hand-drawn free body diagrams for students. The system is driven by novel sketch recognition algorithms developed for recognizing and comparing trusses, general shapes, and arrows in diagrams. We have also discovered trends in how the students utilize extra submissions for learning through deployment to five universities with 350 students completing homework on the system over the 2018 and 2019 school year. A study with 57 students showed the system allowed for homework scores similar to other homework mediums while requiring and automatically grading the free body diagrams in addition to answers.
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DOI:
10.1187/cbe.16-01-0004
发表时间:
2017
期刊:
CBE life sciences education
影响因子:
--
作者:
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发表时间:
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期刊:
Comput. Graph.
影响因子:
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