Mrs. Hefty's fifth grade class has been diving into some difficult math concepts in the past few months. We tackled algebra like pros, learning the importance of following the order of operations using the mnemonic device to remember PEMDAS...Please Excuse My Dear Aunt Sally. Do parenthesis, then exponents, then multiplication and division from left to right, and finally do addition and subtraction from left to right. We are now studying fractions and the importance of finding common denominators before adding and subtracting.