I am now convinced that public schools have figured out that they can destroy society in one fell swoop by employing “new” ways to do multiplication. My 4th grader is multiplying 3, 4, and 5 digit numbers. Easy, right? WRONG! You have to use “partial products” and “lattice” multiplication methods. Take the lattice system:
Looks good. But when you are either dyslexic or ADD, you lose track quickly of which lattice you are on. Or now consider the partial products system:
Clearly, this system is designed to infuriate fathers and sons, create more opportunity for conflict and tear the entire fabric of society to shreds!
Can any of my math loving readers tell me what was wrong with the old method (also depicted to the left of the partial products)? By the way, I saw one website telling me that some person in the 15th century first created the lattice method. So? Someone also came up with the great idea of blood-letting and phrenology. But we learned those things wouldn’t work.
Sigh. Deep breath. Okay, hissy fit over.