数学源于生活,生活中又充满着数学。在数学教学中,我们要紧密联系学生的生活实际,在现实世界中寻找数学题材,让教学贴近生活,让学生在生活中看到数学,摸到数学。从而使学生觉得数学与我们很贴近,很实际。数学情境是学生掌握知识、形成能力、发展心理品质的重要源泉,是沟通现实生活与数学学习、具体问题与抽象概念之间的桥梁。《新课程标准》指出:学生的数学内容应当是现实的、有意义的、富有挑战性的,这些内容要有利于学生主动地进行观察、实验、猜测、验证、推理与交流等数学活动。即人们常说的在活动中学习数学。《标准》还指出:为了使学生 Mathematics comes from life, life is full of mathematics. In mathematics teaching, we must closely contact with students’ actual life, find math subjects in the real world, keep teaching close to life, let students see mathematics in life, touch math. So that students think that mathematics and we are very close, very practical. Mathematical situation is an important source for students to master knowledge, form ability and develop psychological quality. It is a bridge between real life and mathematics learning, concrete problems and abstract concepts. The New Curriculum Standard states that students’ mathematical content should be realistic, meaningful and challenging. These contents should help students take the initiative to conduct mathematical activities such as observation, experiment, guesswork, verification, reasoning and communication. That is, people often say that learning math in activities. The Standard also states: To make students