The "Geometer's Sketchpad" is called 2 1 century dynamic geometry. As math teachers, we should understand and master this teaching software which is powerful, easy to operate, easy to learn and use, and easy to make courseware. Geometer's Sketchpad can turn static figures or objects into dynamic ones, which is helpful to stimulate students' interest in learning, activate students' thinking, and reveal the occurrence and development process of knowledge to students, especially the abstract knowledge about figures and geometry. The application of geometry sketchpad can make the abstract and boring knowledge concepts about graphics and geometry vivid and concrete, and make people clear at a glance, and help students understand the growing point of their own knowledge and clarify the relationship between knowledge, so as to better master mathematical knowledge. Geometer's Sketchpad is widely used in junior and senior high schools, and is favored by junior and senior high school teachers. In elementary school, there was also a lot of knowledge about empty figures and geometry, such as the understanding of triangle internal angles and circles, the area of circles, and the transformation of translation and rotation figures. This knowledge can also be applied to the geometric sketchpad to serve our classroom teaching. When I was teaching the first book "Understanding the Circle" in the sixth grade, I tried to use the geometric sketchpad for teaching. This is also the first time for me to make a math courseware with a geometric sketchpad. I used PPT as a courseware before. By comparing with PPT courseware, I found that the application of geometric sketchpad in teaching is more convenient, fast and practical than PPT. Let's talk about the application of geometric sketchpad in primary school mathematics classroom teaching with a small fragment from our own teaching.

Geometric sketchpad:

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