I still remember the shock of first encountering someone who was not naturally good at math. If I had one piece of advice to give, it would be, "Only ever try

I still remember the shock of first encountering someone who was not naturally good at math. If I had one piece of advice to give, it would be, "Only ever try to teach one cognitive motion at a time." Divide the circumference by the diameter? No. First teach how to measure the diameter. Verify that this skill is being practiced correctly. Teach how to measure the circumference. Verify that the skill is being practiced correctly. Ask her to divide the two. Verify that the skill is being practiced correctly. Then observe that the result is always pi.