If you are reading my blog, then maybe ProfessorChemistry caught your attention. ProfessorChemistry is a YouTube channel that I created to help my students with concepts, difficulties with problems, software i.e. ChemDraw, and missed lectures. These videos can be found at ProfessorChemistry - YouTube I would like to know if these videos have any impact even though they are mostly text and audio and I am trying to develop an experimental design to measure the affect on students. Any thoughts?