追求有效课堂是教学理论和实践研究的永恒主题。数学实践活动既要让学生“动”起来,又要切实提高活动的有效性,在活动中发展学生的数学思考能力,发展学生的应用意识,渗透数学思想和方法。因此,课前和活动开始时要做好活动的定向引导,活动中学生的探究与教师的适时引导要相结合,活动后要促进学生认识的升华。同时,在实现“有效课堂”的基础上向“优效课堂”迈进。 Pursuing an effective classroom is the eternal theme of teaching theory and practice. The mathematics practice should not only make the students move, but also effectively improve the effectiveness of the activities in the activities of students to develop mathematical thinking skills, develop students’ awareness of the application, infiltration of mathematical ideas and methods. Therefore, pre-class and activities should be done at the beginning of the activities of directed guidance, activity exploration of middle school students and teachers timely guidance should be combined, activities to promote the sublimation of student awareness. At the same time, to achieve “effective classroom” based on the “excellent efficiency classroom” forward.