AR-Based Learning in Vocational Training — Evaluation of Learning Outcome Comparing Augmented Reality and Teacher-Instructed Learning Units

Augmented reality (AR) is gaining popularity as a tool for vocational training scenarios. However, quantitative research results regarding learning outcome of augmented reality applications in vocational training environments are scarce. In this paper, we present the results of an experiment conducted at a vocational school in Germany, where we compared the learning outcome of 52 students who used AR glasses to those who were instructed by a teacher. The selected learning unit is well-proven and part of the curriculum of the selected school. It includes the introduction and operation of a milling machine for woodworking. The paper describes difficulties encountered in the conducted empirical study when developing and using the AR- based learning unit. In an empirical evaluation the learners with AR glasses achieved the same learning outcome as learners in the conventional learning unit with the teacher.