One of the early proponents of teaching chemistry heuristically was Harold Armstrong who taught at Christ"s Hospital School, in the UK in the early 1900s. (See blog on Threat to the heuristic method)On page 22 of the 2014 chemistry guide it quite clearly states that the content of the Nature of Science sections are a legitimate item for assessment. No more than about 2 to 3% of the final marks awarded in the written...