Model based learning is a very helpful and effective way of learning. Let, assume a student attending a class of machine design without knowing anything about component. But he have to design those mechanical components like Knuckle joint, Cotter joint, Flange coupling, Riveted joint, Screw jack etc.. Let us discuss regarding the design of screw jack. It was also found that most of the students are not familiar about the screw jack. The students will face lots of problems in designing just by the imaginary component. Even, maximum students don't know: what is a screw jack and how is it works? How it looks like? How many components are there? What are the specific roles of those components?