<p>^^^ This remind me of my son showing me a math problem in 4th grade that required him to multiply something and I watched him draw this odd looking matrix to multiply two double digit numbers…it was weird and took a long drawn out time to come up with the correct answer, which it did but when I showed him how to just multiple two double digit numbers the old fashioned way (you know what I mean), he was flabberghasted that they didn’t teach him that in 3rd grade and he’s been taking all this time to do it an alternate way. When I asked the school about this, they said they teach multiple ways and the children will gravitate to the one that like best. My son said he must have been absent the day they taught my way because he certainly would have selected that over the “lattice” method. That was a long time ago and did well in school with a 750 SAT math score but not because they overtaught but because he ended up in the accelerated and honors classes where they narrowed the focus instead of broadening it.</p>