一、活动内容借助五角星复习巩固“三角形、平行四边形和梯形”(六年制数学第八册第六单元)中有关的几何初步知识 ,并作适当的引伸和发展。二、活动目标1 通过画、折、做、数、算等实践活动 ,加强学生对已学图形及五角星的直观认识 ,掌握有序的数图的方法及三角形内角的应用。2 First, the content of activities With the help of five-pointed star review to consolidate the “triangle, parallelogram and trapezoid” (six-year mathematics eighth volume sixth unit) about the geometry of the initial knowledge, and for appropriate extension and development. Second, the activity target 1 through painting, folding, doing, counting, counting and other practical activities to enhance students have learned graphics and Pentastals intuitive understanding of the orderly number of charts and the application of the triangular interior angle. 2