六十多名学生在一间教室里同呼吸,每个人都要呼出废气,室内空气质量可想而知。然而,打开窗户,扑面而来的是PM2.5指数爆表的雾霾。怎样才能让同学们吸到健康的空气呢?在下雨之前空气污染非常严重,但是一场大雨之后,空气格外清新。能不能用水洗的方式来净化空气呢?一、课题探究1.收集信息。通过调查发现,市场上的空气净化器都是采用过滤网净化空气,没有水洗式空气净化器。上网搜索发现,PM2.5颗粒 More than 60 students breathing in the same classroom, everyone should exhale, indoor air quality can be imagined. However, open the window, blowing the PM2.5 index table of the haze. How to get students to breathe healthy air? Air pollution is very serious before it rains, but after a heavy rain, the air is particularly fresh. Can not use water to clean the air it? First, the project to explore 1. Gather information. Through the survey found that the market of air purifiers are purifying the air filter, there is no washing air purifier. Internet search found that PM2.5 particles