Order of Operations

Can you go to your classes whenever you want or do you have to follow the order of the schedule you were assigned? Will your locker open if you use the three numbers in any order? Does it matter if you turn the lock to the left or to the right first? Does 2 + 5 x 3 equal 21 or 17? You will be using this WebQuest to find out the order of operations that must be followed when evaluating mathematical expressions so that everyone gets the same answer.