A great way to practice measuring angles! Tape up desks with different colored tape and let students use marker on the table to write in the degrees! Students LOVE writing on the tables! (picture only)

This explains the Order of Operations. It addresses the Common Core 5th Grade Math Operations and Algebraic Thinking stardard 5.OA.1: Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.