A cute powerpoint on Order of operations using Pemdas. It concentrates on parenthesis, multiplication and division, and addition and subtraction. Students like this lesson because I challenge the class to get 100% accuracy on simple problems. We always have one or two who miss it. It does have a small extension for exponents. I use if form my 6th graders being introduced to this concept but could be used for 7th and 8th grade or as a review.