Solving Two Step Equations Lesson I have used this demo lesson multiple times to show to hiring committees that I am a good fit to teach. I have also used this to simply teach the concept. Vocabulary:Addition – combining quantitiesSubtraction – taking away or finding the differenceMultiplication – repeated additionDivision – splitting into equal groupsSum – the answer to an addition problemDifference – the answer to a subtraction problemProduct – the answer to a multiplication problemQuotient