学生的学习活动是一个积极主动构建知识的过程,教师应向学生提供充分感知的材料和从事数学活动的机会,帮助他们建立丰富的数学表象,在自主探索和合作交流中真正掌握知识与技能、数学思想和方法,获得广泛的数学活动经验。为此,我在《三角形的认识》课的教学设计中,突出的一个重点是让学生充分感知材料,主动构建知识。 Students’ learning activities are a process of proactively building knowledge. Teachers should provide students with fully perceived materials and opportunities to engage in mathematical activities to help them create rich mathematical representations and truly acquire knowledge and skills in their own exploration and cooperation. Mathematical ideas and methods, gain extensive experience in math activities. For this reason, in my teaching design of the “Triangle Recognition” class, one of the most prominent focuses is to enable students to fully understand the material and take the initiative to build knowledge.