First, the characteristics of geometry sketchpad teaching

In mathematics teaching, the geometry sketchpad can be said to be a "magic weapon" for every mathematics teacher, which plays an important role in teaching. Compared with the traditional "picture" and "blackboard painting", it has the following characteristics and advantages:

Dynamic. It is also a demonstration method in teaching. The difference between the geometric sketchpad and other presentation methods is that it automatically keeps the geometric relationship (quantitative relationship) unchanged before and after drawing. Therefore, it can dynamically demonstrate some basic facts and intuitively show the wonderful nature produced in a specific relationship.

Simplify. Especially in students' inquiry learning, geometry sketchpad can draw quickly (especially function drawing), and its convenient operation can improve the overall efficiency of the classroom and avoid students' energy being distracted as much as possible.

Operationalization. Not only can the teacher demonstrate, but also because of its simplicity, students can take the initiative to do some operations, which can not only deepen their impressions, but also allow students to verify some basic conclusions themselves, which is convenient for inquiry learning and cooperative learning.