新课标提出了以人为本的教育理念,要求教师以学生发展为教学目的,充分发挥学生的自主能动性,从而培养学生的自主学习能力与创新能力。形成性评价是教与学的双向评价,其目的一方面是激励学生学习,帮助学生有效调控自己的学习过程,使学生获得成就感,增强自信心,全 The new curriculum proposed a people-oriented education concept, requiring teachers to develop students for teaching purposes, give full play to students ’initiative, so as to cultivate students’ ability of independent study and innovation. Formative evaluation is a two-way evaluation of teaching and learning. The purpose of the formative evaluation is to motivate students to learn, to help students effectively regulate their own learning process, to make students gain a sense of achievement and to enhance self-confidence.