Using the combined powers of Chuck Norris and polar bears (which are much less powerful than Mr. Norris) to better understand what expressions represent and how we can manipulate them. Our new skills will include using order of operations, combining like terms, and using the distributive property. Great tutorial if you want to understand that expressions are just a way to express things! Common Core Standard: 7.EE.A.1
In simple addition we learned to add all the numbers together to get a sum. In algebra, numbers are sometimes attached to variables and we need to make sure that the variables are alike before we add the numbers.