数学教学,要紧密联系学生的实际和生活环境,从学生的经验和已有知识出发,创设生动有趣,有助于学生自主学习、合作交流的情境,引导学生开展观察、操作、猜测、验证、归纳、推理、交流、反思等活动,使学生通过数学活动,获得基本的数学知识和技能,学会从数 In mathematics teaching, it is necessary to closely connect with the students 'actual conditions and living environment, set off from the students' experiences and existing knowledge, and create vivid and interesting situations that help students to learn independently and cooperate with each other to guide students to observe, manipulate, guess, verify, Induction, reasoning, communication, reflection and other activities, so that students through mathematics activities, access to basic mathematical knowledge and skills, learn from the number