How to Teach the LCM So Your Students Hardly Miss it Again
Students can easily get confused when trying to find the LCM (aka the least common multiple). Add in variables and ask them to find the least common denominator of complicated fractions, and you've got a recipe for disaster.
Unless, that is - you use this simple method to teach LCM.
My students rarely miss LCM problems anymore (or GCF for that matter). And I'm betting your won't either.
Check it out here: