Just in case you're wondering why we're doing what we're doing...Click here to read the 5th Grade Common Core Standard for fractions
Adding and Subtracting Fractions
When you add or subtract fractions, you MUST have a lowest common denominator (LCD).
Using the notes you took in class, define the Zig-Zag Method to determine the lowest common denominator.
Using your notes, define the Multiplication Method of finding the lowest common denominator.