我在自然课中组织学生进行分组实验时，以“导着走”为基本原则，以学生模拟实验和设计简单实验为重点，以培养学生创新思维为最终目的，采用了“备”、“猜”、“验”、“析”、“用”的教学程序，收到了良好的教学效果。现以《液体的热胀冷缩》一课中的“煤油、酒精具有热胀冷缩的性质”分 When I organized students into group experiments in nature class, taking “walking away from ” as the basic principle, taking students 'simulation experiments and designing simple experiments as the key points to cultivate students' innovative thinking as the ultimate goal, I adopted “ ”,“ Guess ”,“ test ”,“ analyze ”,“ use ”teaching program, received a good teaching effect. Is now a “liquid thermal expansion and contraction” a lesson “kerosene, alcohol has the nature of thermal expansion and contraction ” points