高效的课堂源于优秀的教学设计。抓住源头,找准抓手,凸显本质,关注必需,会使教学设计更具魅力。所谓有效教学,就是使课堂教学达到最好效果的教学。有效教学的关键是教师,教师是课堂教学的组织者、协调者、指挥者。一位教师之所以能使课堂教学有效,就在于他善于搅动学生思维的涟漪,把课堂的温度建立在思维的深度上,而这一切都源于一个优秀的教学设计。作为一线数学教师,笔者每天都在感受新课程下新的教学模式:从教案到学案,学案导学; Efficient classroom derived from excellent teaching design. Seize the source, identify the starting point, highlighting the essence, attention to the necessary, will make teaching design more attractive. The so-called effective teaching, is to enable classroom teaching to achieve the best effect of teaching. The key to effective teaching is the teacher, the teacher is the classroom organizer, coordinator and director. The reason why a teacher can make the classroom teaching effective is that he is good at stirring the ripples of students’ thinking and building the temperature of the classroom on the depth of thinking, all from an excellent teaching design. As a first-line mathematics teacher, I feel the new teaching mode under the new curriculum every day: from teaching plan to studying case and studying case study;