10 main ideas - with definitions, examples, activities #1 - definition of a function, function notation, input/output #2 - finding domain graphically (uses desmos activity you will need to activate, search for domain/range @ teacher.desmos.com) #3 - finding domain algebraically - cut and paste, matching activity to develop understanding of restricted vs. unrestricted domain; 2nd matching activity where students find domain or function, write domain in interval notation and match to graph #4 - ty