Fractions...Like, What's Common?

Fractions-Day 4!  We continued examining our concept of adding fractions today, but the mean, old teacher threw a curve at the students...not all fractions that you add will have the same denominator!  After briefly experiencing panic with the room, I quickly explained that we would learn how to solve the problem of unlike denominators TOGETHER!  Joy and song broke out throughout the room in anticipation for the task at hand...(dreaming once again)! 
When an addition problem has two fractions with unlike denominators, we must compare the denominators and find the LEAST COMMON MULTIPLE!  The least common multiple will be our new denominator, but you must adjust each of the fractions individually.  Lets say the first fraction had a 3 in the denominator, and the least common multiple we will use is 12.  Well to get from 3 to 12, you multiply by 4, so on the top of the fraction you must multiply that number by 4 also, since we already did on the bottom to get that least common multiple.  Easy phrase: "WHAT YOU DO TO THE TOP, YOU MUST DO TO THE BOTTOM."  You will do something similar for the second fraction to come up with an equivalent fraction to what was there before, except now it must have the common denominator.  With practice you might just feel like this cartoon, and I know everyone can get there!