This method consists in doing copys of modeling 3D solid in CAD enviroment, tri-dimensions rotations to positioning the copys like ortographics views, wen they are projects in one plan. The tri-dimensions rotations simule projection plan rotation, making students understand the process of views generate in mongean system. The result has being better in primary and second auxiliar views, witch depends of descriptive geometry study and spacial interpretation to be understand. The aplications of this method have been doing with sencond year students of engeneering course.