simulations artificial neural networks 2 magnesium alloys 2 milling 2 roughness 2 3D visualization 1 Second Life 1 augmented reality 1 computer-generated environment 1 control group 1 didactic tools 1 displaced workers 1 earnings 1 job loss 1 mathematics teaching efficacy 1 practice-based teaching 1 preservice 1 teacher education 1 technology enhanced teaching and learning 1 usability of virtual reality systems for education purposes 1 virtual excursions 1 virtual reality 1 virtual reality systems analysis 1 virtual world 1 vocational education and training (VET) 1