一、说教材“上下”是义务教育课程标准实验教材第五单元“位置与顺序”第二节的内容。重点体验物体的相对性。本单元的教学目标是 :1 在具体的活动中 ,让学生体验前后、上下、左右的位置与顺序 ,初步培养其的空间观念。2 能确定物体前后、左右、上下的位置与顺序 ,并能用自己 First, the textbook “up and down” is compulsory education curriculum standard experimental textbook fifth unit “location and order” the second section. Focus on the relativity of objects. The teaching objectives of this module are as follows: 1 In specific activities, let the students experience the position and order of the front, back, left and right, and initially cultivate their concept of space. 2 to determine the object around, around, up and down the location and order, and can use their own