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人教版生物学七年级下册第四单元第七章第二节“探究环境污染对生物的影响”中的“探究酸雨对生物的影响”实验的不足之处在于:实验设计较为复杂,时间过长,见效较慢,未涉及探究酸雨对动物的影响等。从教学实际出发,采用“小金鱼、食醋”等易得材料进行创新设计,模拟探究酸雨对小金鱼生命活动的影响,具有设计简单易行、趣味性强的特点。
People’s Pupils Biology seventh grade fourth volume under the seventh chapter second section “to explore the impact of environmental pollution on biological ” in “to explore the impact of acid rain on biological ” experimental shortage lies in: experimental design More complex, time is too long, the effect is slow, not involved in exploring the impact of acid rain on animals. Based on the teaching practice, innovative design of “Little Goldfish, Vinegar” and other readily available materials was used to simulate and explore the impact of acid rain on the life activities of small goldfish, which has the characteristics of simple design and high interest.