自然教学应注意增强趣味性。针对小学生年龄小、好游玩的特点,以游戏形式组织教学,是一种行之有效的方法。如教《水的压力和浮力》一课,在游戏中渗透实验,在实验过程中融合趣味游戏,能使学生更好地了解物体在水中沉浮的规律。课前,教师拿两个装眼药水的玻璃瓶,用胶布把它们大口的一头连接起来,在两端的小口上各套上自行车上用作气门芯的细橡胶管,一段插入水里,一段露在水外,这就是个“潜水艇”了。教师先演示“潜水艇”的游戏,当对露在水外的橡胶管吸气时,便会通过另一端的橡胶管把进入“潜水 Natural teaching should pay attention to enhance the fun. In view of the characteristics of primary school pupils who are young and have fun to play, it is an effective way to organize teaching in the form of games. Such as teaching ”water pressure and buoyancy,“ a lesson in the experiment to penetrate the game, in the process of experimenting with the integration of fun games, enabling students to better understand the laws of objects in the water ups and downs. Before class, the teacher took two glass bottles filled with eye drops, with a large mouth to connect them with a tape on both ends of the small mouth each set on the bicycle as a valve core fine rubber tube, a period of water into the section of a Outside the water, this is a ”submarine“. The teacher first demonstrated ”Submarine“ game, when inhaling the rubber tube exposed outside the water, it will enter the ”diving" through the rubber tube at the other end