一、活动方法准备数片瓦片(石片、玻璃片),和你的小伙伴来到风平浪得远,瓦片跳跃的次数多。结果有的跳了两三下,有的跳了四五下,有的甚至跳十几下。真有趣! 再换上石块(或砖块),向河里抛去,石子随即就沉下了水。 First, the activity method to prepare a few pieces of tile (stone, glass), and your partner came to the wind far waves, the number of tiles jump more. Some jump some two or three results, some jump four or five, and some even jump ten. Really interesting! Replaced with stones (or bricks), thrown into the river, the stones immediately sank the water.