科学教材中二氧化碳系列实验的微型改进

Micro-improvement of Carbon Dioxide Series Experiments in Scientific Textbooks

苏教版小学科学与浙教版初中科学教材中二氧化碳的系列实验存在仪器复杂、药品使用量大、操作步骤繁琐、实验耗时长、成功率低等问题.针对以上不足,本实验利用微型实验仪器简单便携、试剂用量少、安全性高的优点,从整合度、简约化、绿色化的角度出发,分别对苏教版《科学》四年级上册和浙教版《科学》八年级下册教材中二氧化碳的制备与性质实验进行一体化微型改进.

The preparation and properties of carbon dioxide in scientific textbooks have problems such as uncontrollable reaction, large amount of drugs, cumbersome operation, long time-consuming and low success rate. In view of the above deficiencies, this experiment utilizes the advantages of simple and portable micro-experimental instruments, low reagent usage and high safety. From the perspective of integration, simplification and greenness, the micro-improvement of the preparation and properties of carbon dioxide in the fourth grade of the Science edition of the Jiangsu Education Edition and the eighth grade of the Science edition of the Zhejiang Education Edition was carried out respectively.