Vedic mathematics and fast calculus
Italian version A few years ago my friend Andrea, an elementary school teacher, invited me to teach a math lesson as part of a school project. He told me that I could freely choose the topic to present to a mixed class of elementary school children, ages 8 to 10. I remember that I enthusiastically welcomed this proposal, and when I thought about the topic to propose, it occurred to me that a few months earlier I had heard about…