I just saw a video about some teacher who wrote out the 9 times table, but did one of them wrong. He had 9 x 10 = 91.
The students laughed, and then the teacher went into some goofy “life lesson” about how people pay attention to mistakes, but don’t praise you when you get things right.
Well … okay, but think how tiresome life would be if people were praising everyone when they got things right.
“Well done, honey. You stopped at that stop sign! Hey, that’s fabulous, you used your turn signal! Holy smokes, you stopped at the red light! You’re so great!”
I agree, being excessive in praise would be tiresome. Yet, based on your description, I got a different impression of the teacher’s purpose. It didn’t seem as if the teacher was attempting to teach students to over rotate on calling out what’s right. It appeared the teacher was trying to use their natural propensity to see error to encourage them to have a more balanced perspective…seeing both right and error and respond accordingly.
Maybe not…but if that was the teacher’s intent, it seemed like a clever way to engage the students and help them grasp the concept.