论文部分内容阅读
苏教版小学科学六年级上册第四单元《太阳系大家族》这一课的教学内容里面有这样一个实验:探究行星与太阳之间的距离和行星公转周期有什么关系。这个实验的目的就是要让学生认识到行星与太阳的距离越远,行星的公转周期越长,这也是本课内容的教学难点。书中的实验方法在操作过程中存在以下不足:匀速运动学生难以把握。在此实验中,保持橡皮塞的匀速运动是操作难点。虽然设计了套管装置,使实验者能利用重物砝码来显示橡皮塞是否匀速运动:在橡皮塞转动过程中,塑
Sujiao version of elementary school science sixth grade Volume fourth Unit “solar system” This class teaching content such an experiment: to explore the distance between the planet and the sun and the planet revolution cycle has anything to do with it. The purpose of this experiment is to make students realize that the longer the distance between the planets and the sun, the longer the revolution period of the planet, which is also the teaching difficulty of this lesson. The book’s experimental methods in the operation of the following deficiencies: uniform students difficult to grasp. In this experiment, to maintain the rubber stopper uniform motion is difficult. Although the design of the casing device, so that experimenters can use weights to show whether the rubber stopper is moving at a constant speed: In the rubber plug rotation process, the plastic