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山东省东营市位于黄河入海口,这里的黄河水因带有大量的泥沙而变得浑浊,但却是东营市居民生活的必需水源。这里的农村居民,大都沿用传统的静置沉降法对黄河水进行初步的净化,这种净化效果并不理想。如何通过简单的物理方法得到澄清透明的黄河水呢?这一问题,为初中化学教学提供了课外资源,为培养学生的探究意识提供了空间。教学中发现,利用人教版(2012版)九年级化学上册第四单元课题2“水的净化”77面课外实验“自制简易净水器”对黄
Dongying City, Shandong Province is located at the mouth of the Yellow River. The Yellow River water here is turbid with a lot of sediment, but it is an essential source of water for the residents in Dongying City. Most of the rural residents here follow the traditional method of settling sedimentation for the preliminary purification of the Yellow River water. The purification effect is not satisfactory. How to get clear and transparent Yellow River water through simple physical methods? This problem provides extracurricular resources for junior high school chemistry teaching and provides a space for cultivating students’ inquiry consciousness. Teaching found that the use of PEP (2012 Edition) ninth grade chemistry on the fourth unit of the subject 2 “water purification ” 77 surface extra-curricular experiments “self-made simple water purifier ” to yellow