Two veteran math educators demonstrate how some "magnificent mistakes" had profound consequences for our understanding of mathematics' key concepts. In the nineteenth century, English mathematician William Shanks spent fifteen years calculating the value of pi, setting a record for the number of decimal places. Later, his calculation was reproduced using large wooden numerals t...(展开全部)

Two veteran math educators demonstrate how some "magnificent mistakes" had profound consequences for our understanding of mathematics' key concepts. In the nineteenth century, English mathematician William Shanks spent fifteen years calculating the value of pi, setting a record for the number of decimal places. Later, his calculation was reproduced using large wooden numerals t...(展开全部)

http://rapidshare.com/#!download|950tl4|386256954|GRRM-The-Mystery-Knight.pdf|665 The title of this massive anthology implies a binding military-sf theme, but actually the book is an essay in providing lots of different genres between one set of covers. Happily, it’s entirely successful. There really is something for everybody in it. Joe R. Lansdale has a straight history-cum-m...(展开全部)