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《数学课程标准》提出:“人人学有价值的数学”、“人人都能获得必需的数学”、“不同的人在数学上得到不同的发展。”课堂教学的有效性和实效性越来越受到人们的关注,已成为衡量一堂课成功与否的重要标准。因此,新课程下的课
The Mathematics Curriculum Standard states that “Everyone learns valuable mathematics”, “Everybody can get the necessary mathematics.” “Different people get different developments in mathematics.” More and more people pay more attention to effectiveness and effectiveness, which has become an important criterion to measure the success of a lesson. Therefore, the lesson under the new curriculum