TERRIFIC Rational-Numbers, Add, Subtract, Multiply, Divide, Order-of-Operations Smartboard-Slides-Lesson that has 27 easy-to-understand slides with LOTS of practice problems for Adding, Subtracting, Multiplying, Dividing Decimals, Fractions, Integers using Order of Operations. Your students will LOVE this lesson! You will use this year after year. WARNING: You MUST have SMART Technologies SMART software, and a SMARTBOARD to teach from, to effectively download, open and use this Interactive Smart