Advances in International Applied Mathematics

In recent years, the rotation transformation of graphics has become one of the hot topics in the middle school exam. Although there is no word “rotation” in the geometry problem, the solution idea often needs to construct the rotation to reduce the elements, that is, the element is concentrated or dispersed, so as to solve the difficult geometric problems skillfully, and test the students geometric intuition and spatial imagination ability. The application of “rotation of graphics” to the study of the motion of geometric figures, the transformation of static problems into dynamic problems, can expand students imagination space, excavate the internal relations between knowledge, and construct new graphics. Therefore, teachers should explore students dynamic thinking process in the teaching of this unit. Although the transformation of geometric problems is difficult, if we can reasonably use rotation according to the essential characteristics of the problem, we can often transform the difficult into easy and complex into simple.

Rotation; Concentrate; Diperse; Elements