一、比较异同教师要引导学生善于捕捉事物的异同点,抓住事物的特征,克服观察不细致不深刻的毛病。倒如,校园里有许许多多花坛,我布置学生观察校园里的花坛,找出每个花坛的不同点,找得越多越好。通过观察,同学们把每个花坛的不同点,甚至是极细微的差别都找了出来。从花坛形状看,有圆形的,椭圆形的,六角形的,条形的,梭形的等等。建造花坛的材料当然都是砖头、沙、水泥。通过观察,大家发现有的坛壁四周贴着磨光石子,闪着五颜六色的光彩,有的画着图案,有的摸上去像大理石一样光 First, more similarities and differences Teachers should guide students to be good at capturing the similarities and differences of things, to seize the characteristics of things to overcome the observation is not detailed not profound problems. For example, there are many flower beds on campus, I arranged the students to observe the flower beds on the campus, find out the different points of each flower bed, find the better. Through observation, the students found out the differences of every flower bed and even the subtle differences. From the shape of the flower bed look, there are round, oval, hexagonal, bar-shaped, fusiform and so on. Of course, the materials used to build flower beds are bricks, sand and cement. Through observation, we found some altar walls around the polished stone, flashing colorful luster, and some painted patterns, and some feel like the marble light