多元信息技术融合的化学论证式教学实践——活泼的金属单质钠

Chemical Argumentation Teaching Practice Integrating Multiple Information Technologies:Active Metal Sodium

论证教学有利于提升学生的证据推理核心素养,在“钠”的教学中采用氢气检测仪,能安全有效地实现金属钠与水反应产物氢气的定量检测数据的可视化,用热成像仪采集能量的转化信息,并融合鸿合π投屏与希沃平台的直播功能,将氢气检验、能量变化、直观实验现象多项证据同时呈现在白板上,提升论证的有效性。本节课还引入与实验中采集的热成像图片高度吻合的图片素材——金属钠注射肿瘤过程中的红外热影像图,创设丰富情境素材加强论证,彰显化学学科价值。

The chemical argumentation teaching is conducive to improve students'key competence of evidence reasoning.By using hydrogen detector in"sodium"teaching,quantitative detection data of hydrogen,the reaction products of metal sodium and water,can be safely and effectively visualized.Moreover,the effectiveness of the argumentation is also promoted with images using to collect energy conversion information,and the projection of Hong-he screen and Seewo platform live broadcast function to present the intuitive evidence of experimental phenomenon in hydrogen test and energy change on the whiteboard.This class also introduces picture materials that are highly consistent with the thermal imaging pictures collected in the experiment:infrared thermal image images in the process of metal sodium tumor injection,creating rich scene materials to strengthen the argumentation,and highlight the value of chemistry discipline.