圆面积教学不仅要使学生理解求积公式是怎样推导出来的，更要以此为契机，创设相关的教学情境，引导学生分析、思考、估测、探索，并引导学生进行简单推理，以发展学生智力，培养能力。一、创设数学情境，培养学生的分析估测能力引导学生对一些数学问题作出合理估算或猜测，有 The circular area teaching should not only enable students to understand how the quadrature formula is derived, but also takes this as an opportunity to create relevant teaching situations, guide students to analyze, think, estimate and explore, and guide students to make simple reasoning to develop. Student intelligence, ability to develop. First, create mathematics situation, train students’ analysis and estimation ability, guide students to make reasonable estimation or guess on some mathematic problems.