In function teaching, it is often difficult to show the essence of function knowledge intuitively if the teaching mode of formulas and numbers is simply adopted. Therefore, the rational use of geometric sketchpad in function teaching can play a good teaching effect.
With the help of geometric sketchpad, abstract mathematical concepts can be visualized
Concepts in mathematics are often abstract and difficult for students to understand, which is a difficult point in mathematics teaching. If we can apply the geometry sketchpad teaching, we can visualize some concepts, make the knowledge simple and clear, and make it easier for students to accept. For example, when learning the concept of "axis symmetry", using the geometric sketchpad to demonstrate can not only attract students' attention, but also master the learning knowledge.
Concept teaching is a very important and difficult part in mathematics teaching. The teacher draws pictures on the blackboard with chalk to show the graphics about the teaching content. This is the most basic means adopted by the traditional teaching mode. This method can combine familiar scenes and experiences in students' life to describe and analyze typical images. But this requires students to carefully observe and identify images, as well as a lot of association and comparison. This abstract conclusion may lead to students' incomplete understanding of concepts. In fact, dynamic courseware is of great help not only to the teaching of some basic concepts, but also to some judgments that need to be made by using concepts. For example, it is difficult for students to distinguish the concepts of axisymmetric graphics and centrally symmetric graphics. It's hard for students to imagine what the graphics look like after folding or rotating 180. If you show students how a graph is folded along a certain line or rotated around a certain point 180, and then how the two parts overlap or not, the effect will be very good, so that students can really understand. The dynamic courseware of geometry sketchpad and cola mathematics is not only helpful to teach some basic mathematical knowledge points, but also helps students to judge which concepts need to be used in the topic. For example, students tend to confuse the concepts when distinguishing the central symmetric figure from the axisymmetric figure, so it is difficult for students to think abstractly about what will happen after the figure is turned over or rotated 180 degrees. If we rotate a figure along a straight line or around a certain point 180 degrees, it can be presented with a geometric sketchpad. Show students how these two parts overlap or not, and the effect will be very obvious. Students can really understand conceptual knowledge.
Download address of Chinese full version of Geometer's Sketchpad:
Win edition
/iclk/？ zoneid= 14448
Mac version
/iclk/？ zoneid= 14449
I hope I can help you.