Estimation should be taught as a respectable discipline and one worthy of serious study. Even aside from the fact no intelligent educator can claim with a strai

Estimation should be taught as a respectable discipline and one worthy of serious study. Even aside from the fact no intelligent educator can claim with a straight face that most of their students will need to do arithmetic by hand in a real scenario, estimation is vital for getting an intuition about orders of magnitude and how quickly addition and multiplication increase a value.