Students get frustrated with trying out different numbers to get the right sum and product. It's easy for them to make a mistake or think they made a mistake.
This method is more mechanical and also looks easier than just chugging on the quadratic formula.
Is it dramatically better than well-taught and well-practiced traditional methods? Probably not, but I like it. It does seem slightly better, but then I'll never have to crank through a worksheet of these.
like this: https://www.youtube.com/watch?v=Z5MnP9da4EM&t=371s
It does involve writing down and checking combinations. It's roughly how I was taught back in the day and I think it's very popular even now.
"Imagine if, instead of wasting time on phonics, we inspired white upper middle class students like myself by giving them real literature!"
"Imagine if they inspired students with the kind of problems I think I would have found interesting!"
"Imagine if they taught to my learning style" (learning styles are mostly bunk, but everyone thinks they would have done better if only the teacher catered to them better).
"Imagine if a class of 20+ kids who are forced to be there was managed the way a team of 5 adult professionals was managed!"
It's human nature for learning to take place naturally and effortlessly when there is a felt purpose and relevance. For all humans.
The problem with this in schools, is that you can't actually generate this sense of purpose (which is a feeling, emotional) for arbitrary subject-student pairings. What do when it fails?
The strategy is, they TRY to generate the sense of purpose (maybe not try that hard, after years of failure and burnout), but fall back to the emotion of fear as primary coordinator/motivator for everything.
They make students afraid to look stupid in the short term, and afraid of an abstract "bad future" ("flipping burgers") in the long term. They introduce the system of grades for 3 whole years of middle school, when the grades serve no purpose (they're not used by colleges) but to generate the fear-based emotional economy of the school.
Fear is the primary emotional mechanism of the school. For every kind of person, this is worse educationally than felt purposeful engagement.
I agree that depending on the implementation, a subject can feel easy, but let’s not pretend that there are no difficulties in learning and teaching these concepts, and that it continues to feel “easy” later down the road.