How to make this more fun . . . Students in IS II play with and handle these cool blocks that are 1 cm on a side (volume is 1 cc and 1 mL) and also have a mass of 1 gram. They also wrote in their ejournals (electronic journals on Goggle Drive) about what they already knew about SI units, then watched this classic, vintage film (c.1975) (that they really liked) and then wrote in the journal again. The film is on the class Moodle so they can use it for review.