教学作为一种有明确目的性的认知活动,其有效性是广大教师所共同追求的。有效教学是教师在达成教学目标和满足学生发展需要方面都很成功的教学行为,是教学的社会价值和个体价值的双重表现。在新课程理念下,有效的数学教学要以学生 Teaching as a clear purpose of cognitive activities, the effectiveness of the majority of teachers are the common pursuit. Effective teaching is a teaching behavior that teachers are successful in reaching the teaching goal and meeting the needs of students’ development. It is a double manifestation of the social value and individual value of teaching. Under the new curriculum concept, effective mathematics teaching should be based on students