I was a terrible student. I discovered that the same simple lab experiments were repeated verbatim or with minor variances every year in the curriculum. Went to the public library and retrieved old Regents exams and curriculum texts. I ‘cliff noted’ my way through science labs. Same thing with dissections.The biggest obstacle for teaching a lab based science class is obviously the lab portion. You are probably familiar with all of the prep work and hands on instruction that it takes to teach a worthwhile chemistry lab to students. As a current science teacher, I have struggled with having to substitute virtual labs and lab simulations for my normal hands on labs that I would normally do with my students. Online instruction may work for some subjects, but I have found in the past few weeks that it is very difficult to do without lab based science classes.