同500年前意大利的格子乘法，见人教版小学数学四年级上册

来源: 金立维于 2010-05-01 21:50:00 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.