Fair play man, that's quite a story. Must take a look at the slides when I get a chance, but yeah, that sounds like a good approach. Science is all about discovery after all. Good to remind them that while they might have to learn by re-hashing simple experiments that have known outcomes, once you get into working science, it's very much about getting a handle on unknowns. Re the Comic Sans, just took a quick look there, I think it works pretty well in this instance. Along with the dark textured background, looks a lot like chalk script on a blackboard - suitably scholastic.