QR Codes for on-Demand Student Training in Teaching Laboratories and Data-Driven Feedback for Instructors

Timely and relevant feedback improves student learning; however, it can be difficult to provide such feedback to all students in a teaching laboratory environment. To address this, short training videos were linked to QR (Quick Response) codes for viewing on mobile devices. The unique QR codes were placed around the laboratory, at workstations, and on the learning management system to give students access to instruction on demand. Usage data was collected on how frequently each QR code was scanned and at what location. Students were also surveyed about their experiences using the QR code-linked videos. QR codes were scanned preferentially on the learning management system before laboratory sessions or at laboratory workstations during the lab. QR codes placed at “point-of-use” locations in the lab were used less frequently. There was also a large variation in the number of scans based on the topic of the video. This variation can give instructors objective feedback from students about where they struggle in the lab. Overall, students and instructors found utility in the QR code-linked videos.