Iam a teacher for science courses and approved instructor for some courses in the aviation field. I studied some courses for professional instructors and how to do assessment for the students and the trainees as a competency assessment to make sure that they have the knowledge and the skills after they learnt the materials.. I teach science courses for many years.. I depend on the interaction methods to make sure that the students capable of thinking and talk about science as a professional one.. i wish all success for all the the students.. I offer free trial lessons