This is a powerpoint slide that is focused on Variables and Expressions. It goes along with Topic 6 (lessons 6-1 and 6-2) of the Envisions Math curriculum. Problems in this powerpoint are taken from the textbook as well as some original problems. The slides allow the students to see the problems, without seeing the answers. The Teacher can show the answers one by one in order to give students who need more time an opportunity to answer at their own pace.