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为了突破血液循环途径教学的难点,我们设计了血液循环图解教具,可边讲边演示,给学生以感性认识,加深了学生对血液循环知识的理解。材料长120cm,宽70cm的胶合板一块;白广告色三小瓶、黑油漆半两,红、蓝广告色各一小瓶;2.5V的小灯泡108个、小开关10个、插座1个、插销二个、变压器一个、电线6米;长120cm、宽70cm的镜框一个、玻璃一块、装变压器小木盒一个。制做方法 1.用白广告色刷胶合板2—3遍、放干待用。 2.在胶合板上绘血液循环图。 3.着色:心脏染红色,左右心室、左右心房
In order to break through the teaching difficulties in the blood circulation, we designed a blood circulation diagram teaching aids to give lectures on lectures and give students a sense of perceptual knowledge to deepen students’ understanding of blood circulation. Material length 120cm, width 70cm plywood; white advertising color three vials, black paint half two, red, blue advertising color each vial; small 2.5V bulb 108, a small switch 10, a socket, two latches , A transformer, wire 6 meters; length 120cm, a 70cm wide frame, a piece of glass, a small transformer box installed. Making method 1. With white advertising color brush plywood 2-3 times, put it aside for use. Draw a blood circulation diagram on the plywood. 3. Coloring: red stained heart, left ventricular, left atrium