The development of today's educational world is entering an era marked by incessant
technological innovation, so it requires the adjustment of the education system in tune with the
demands of the workplace. Some practical subjects other than the need to know the basic
concepts and theories supporting, also must perform experiments / experiments in the
laboratory to understand a certain concept or the basic theories that have been studied in order
to have a broader understanding level . Urgency ( virtue ) of this study are: 1 ) The creation of a
laboratory model of a web -based interactive 3D simulation, is expected to address issues such
as limitations on conventional lab time and place to implement practical, resource constraints
are capable of teaching control of productive subjects , lab equipment and materials is minimal
and difficult to establish because of the high cost of equipment / materials and maintenance
costs , improve the competence of vocational students especially for productive subjects and 2 )
increasing the critical thinking skills of vocational students through the use of web -based 3D
simulation lab before entering the industry. From this research a product produced laboratory
models simulating three - dimensional interactive web-based which can be used in productive in
vocational subjects. Products such as display / web pages on the implementation of the practice
on the subjects of Analog, Digital, and Industrial Electronics SMK designed in 3D interactive
connected to the internet on-line. Evaluation results show that the validation of the product by
the average expert judgment obtained excellent ratings and the students' response to the media
very well