This is a 34 page Smartboard file explaining the process of deciding which operation to do first when a problem has multiple operations in it. The lesson shows a couple of mnemonics to help remember. From there there is lots of student interaction pages to practice on. Some let students pop balloons and others have students show which operation to do 1st, 2nd, and 3rd. The lesson then proceeds to solving several to get a final answer. All practice pages include answers.