In recent years the use of instructional videos with on-screen instructors has gained global popularity in college classrooms and across private industries. However. it is not clear if including the instructor on-screen in an instructional video provides any benefit to learners. and the research in the area has not been synthesized. https://www.hindigyanvishv.com/flash-deal-Iowa-Cubs-Foam-Finger-p32059-hot-value/