《义务教育数学课程标准》指出:数学教学要从学生已有的知识经验和认知水平出发,为学生提供充分从事数学活动的机会。学生的学习起点在哪里?怎样更好地把握?是我们在课前酝酿教学策略时,反复考虑却经常拿捏不准的地方。2012年我们学校主课题《研究儿童:教师课程能力自主建构的行动研究》被列项为江苏省十二五规划重点资助课题,我们围绕课题学习、思考、探索与实践。发现学情前测是走向学生、了解学生的有效方法之一,并从中 “Compulsory education mathematics curriculum standards” that: mathematics teaching from the students have the knowledge and experience of cognitive level, to provide students with the full opportunity to engage in mathematical activities. What is the starting point for students’ learning and how to grasp them better? It is a place we often think twice before we think about teaching strategies before class. In 2012, the main subject of our school, “Researching Children: An Action Research on Autonomous Construction of Teacher’s Curriculum Competence”, was listed as a key funded topic for the 12th Five-Year Plan of Jiangsu Province. We studied, thought, explored and practiced around the subject. The discovery of pre-test is one of the effective ways to get to know students and learn from them