I don't think that I ever had a math instructor that actually knew the subject until I reached college. It was a true joy to ask questions and get real answers. The US is crippled in math and science because k-12 education has become a union racket to employ the otherwise useless. The best way to change the way we instruct is to abolish all state funded public schools, disband public unions that kick back campaign money to the supposed representatives and let the parents and local school boards freely fire the worthless drones.