自制教具在初中几何教学中的应用——以“四边形”教学为例

Application of Self-Made Teaching Aids in Geometry Teaching in Junior High School——With Quadrilateral Teaching as an Example

在初中"四边形"教学中,自制可以活动的四边形和带对角线的平行四边形教具,根据教学内容的推进分别演变为矩形、菱形和正方形,辅助学生直观体验不同四边形的性质和变化规律。运用自制教具推进几何教学是从学生已有的知识和经验出发,可以让学生经历知识形成和发展的过程,激发学生学习几何的兴趣,变"要我学"为"我要学",从而有效提高教学效率。

In junior high school quadrilateral teaching, self-made deformable quadrilateral and diag-onal parallel quadrilateral teaching aids can turned into rectangle, rhombus or square according to the teaching contents, which can help students experience the nature and changing rules of different quadri-laterals. Using self-made teaching aids to promote geometry teaching from the perspectives of students‘previous knowledge and experience can help students experience the process of knowledge formation and development, stimulate students‘interests in geometry learning, and promote students to change from pas-sive learning to active learning, so as to effectively improve teaching efficiency.