I feel frustrated over the way I was taught math as a child. I was not aware that fractions had a potentially representative relationship to the properties of the physical world. I did not know that trigonometry allowed a forest ranger to figure out how tall a tree was. All I remember is Square Root Day, September 9, 1981. Cooking is related to fractions. Woodworking is related to fractions. Numerator and denominator sound like words that mean the sexual parts of insects. I have been given to understand that color-coordinated blocks are useful for teaching children fractions in Singapore. Did you feel, as I did, that the American boy who had written graffiti deserved to be caned?