摘要
根据建构主义理论分析了＂元素化合价＂概念意义建构条件,并进行了元素化合价教学设计和教学实践研究,获得了理想的教学效果。研究结果表明：认识原子结合其他元素原子的能力,在此基础上提出用＂价＂概念去表达原子的这种能力,引导学生形成准确的＂元素化合价＂概念,学生书写化学式的能力迅速提高。
This paper analyzed conditions for meaning construction of ＂valence of element＂ based on eonstructivism theory, studied teaching design and teaching practice, and achieved ideal teaching effect. The results showed that using ＂price＂ to express the ability of one atom bonded atoms of other elements and guiding students to form concept of ＂valence of elements＂ accurately could improve students＇ ability to write chemical formula.
出处
《化学教育》
CAS
北大核心
2016年第5期25-27,共3页
Chinese Journal of Chemical Education
基金
湖南师范大学研究生处教改课题经费资助项目
关键词
元素化合价
意义建构
教学设计
化学式
valence of element
meaning construction
teaching design
chemical formula
