Quick links: ► downloadable teaching materials for counting principles ► syllabus content for the Algebra Topic: HL syllabus (see syllabus item 1.3).Counting principles is specifically listed in the HL syllabus but is only suggested in the SL syllabus in connection to the binomial theorem, where in the "further guidance" section of the SL syllabus it is written that "counting principles may be used in development...