A condensed and concise 2-page reference sheet that can be printed on the front and back of one sheet of paper. It includes key vocabulary, concepts, and graphs of basic supply and demand concepts. I use the T.I.M.E.R. acronym to explain causes of shifts in demand and the T.I.R.E.S acronym to explain causes of shifts in supply. I use the rhymes, supply to the sky, demand to the land, as an easy way to remember the slopes of each line.