This powerpoint lesson can help you teach your students how to work with inequality statements if you add, subtract, multiply or divide both sides by a positive or negative integer.
Students will use number lines to locate values and decide the order of the two numbers. Then after performing an operation on both sides they will reconsider the inequality and decide if the order switches or remains the same. Students will learn that when they add or subtract any positive or negative integer, the order remains the same, but when they multiply or divide by a negative integer the order reverses. The order remains unchanged when they multiply or divide by a positive integer.