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一、演示的共同要求演示立体物或挂图电影等平面形象,都应照以下要求进行。1、演示物应有足够的尺寸,为了保证学生看清演示物,教师要注意演示材料的大小。如果过小,就不能采用演示法;如果很大,教师在必要时,还应在演示材料的后面加上衬幕。2、演示物应放在学生可见的高度上演示是要学生看的,为了使全班学生坐在原位置上对演示看得清楚,所以演
First, the presentation of the common requirements Demonstration of three-dimensional objects or wall charts, such as film images, should be carried out in accordance with the following requirements. 1, the demonstration should have enough size, in order to ensure that students see the demonstration, teachers should pay attention to the size of demonstration materials. If you are too small, you can not use the presentation method; if it is large, the teacher should, if necessary, add a curtain to the back of the presentation material. 2, the demonstration should be placed on the students visible height is to be seen by the students, in order to make the class sit in the original position on the demo clearly, so play