According to the cognition psychology theory, this paper expounds the content and the request of teaching model, establishes the model for each factor of teaching design, realizes the related survey. Through excavating the data, and based on the evaluation of student learning and teaching resources, the paper realizes the optimization and attemper of teaching model, sharpens the ability which the teaching system teaches students in accordance with their aptitude.
The paper presents a novel collision and overlapping free labeling framework, under which all label positions are indicated by grid number so that labels of points, arcs and polygons are organically linked by grids, and so do labeled objects and unlabeled objects. The algorithm is of good simplicity, efficiency and effects to meet the demand of high quality map label placement, and is successfully applied in commercial GIS.