通过有限认识无限的常见方法解正己由于客观世界是有限与无限的统一体，因此，有限与无限便成了中学数学涉及面极广、教育功能极大的一对矛盾．笔者认为，这也是当前数学教学中往往被忽视的一对矛盾．有限与无限是对立的统一，我们往往通过有限来认识无限，也通过无限来确... Through the limited understanding of the infinite common method to solve the problem of the finite and infinity, since the objective world is a unity of finiteness and infinity, it becomes a pair of contradictions that the mathematics of middle school covers a very wide range and education function is extremely great. The author believes that this is also a pair of contradictions that are often overlooked in current mathematics teaching. Limitation and infinity are the unity of opposites. We often know the infinity through finiteness, and also through infinitely...