That's an interesting article, though I think I would disagree with assumptions 3 and 4, at least as they apply towards non-special needs secondary school child

That's an interesting article, though I think I would disagree with assumptions 3 and 4, at least as they apply towards non-special needs secondary school children. But, that said, I agree with all 10 of his misguided notions. They're all issues. As a math teacher, I've mostly seen issues with 2, 3, 5, 6, 8 and 10, though they others have been prevalent some (except the special needs one; I have not worked in a special needs class nor have I had a collaborative class with special education students, only ESL learners). And number 3 especially hits a point with me, as so many of my students don't have fluency in basic math and it makes teaching Algebra 2 and Geometry a real pain in the ass.