“大气运动”和“洋流”是中学地理教学的难点之一,为突破难点,笔者制作了“大气环流和洋流”演示仪(图1)。演示仪将地球变形为立方体容器,确定赤道气团和北极气团为研究对象,左下至右上对角面为运动路线纵向剖面图;结合大气运动,利用吹风机模拟出洋流的形成过程。所以,本教具能演示单圈环流、三圈环流、气压带和风带的形成、洋流的形成等知识点,在课堂教学和实验活动中应用效果良好,并获得第二届华南师范 “Atmospheric movement” and “Ocean current” are one of the difficulties in geography teaching in middle schools. To make breakthroughs difficult, the author produced the “Atmospheric General Circulation and Ocean Current” demo instrument (Figure 1). The demonstrator deforms the earth into a cube container, determines the equatorial air mass and the arctic air mass as the research object, and the lower left to upper right diagonal surfaces are the longitudinal cross sections of the moving route. In combination with the atmospheric movement, the blower is used to simulate the ocean current formation process. Therefore, the teaching aids can demonstrate knowledge points such as single-loop circulation, three-loop circulation, pressure belt and wind-belt formation, and the formation of ocean currents, which have been applied well in classroom teaching and experimental activities and obtained the second-