在化学微观认识学习中发展学生科学本质理解的思考

发展学生对于科学本质的理解是科学教育的一个重要目标。在化学微观认识学习中发展学生科学本质理解的基本要点是：（1）化学微观认识是建立在事实基础之上发展起来的；（2）化学微观认识属于科学理论知识，是人类建构的说明物质微观世界的可能性认识；（3）化学微观认识之所以合理是因为较为满意的从微观结构的角度解释和预测了物质的性质。发展学生科学本质理解的基本思路是：（1）以WWHW为架构对化学微观认识进行认识论思考；（2）以“横纵关照”为基本技术构建发展科学本质理解的教学目标；（3）设计具有认识论意义的教学主题；（4）通过显性话语发展科学本质理解；（5）通过反思性活动发展科学本质理解；（6）适当评价学生对于科学本质的理解。

Thinking about developing Students' Understanding of Science Essence in Study of Chemistry Microcosmic Cognition

Developing students' understanding of science essence is an important object of science education.The essential points of developing students' understanding of science essence in study of chemistry microcosmic cognition include:(1) chemistry microcosmic cognition is developing based on fact,(2) chemistry microcosmic cognition is scientific theoretical knowledge which is constructed by people to explain the microcosm of substances,(3) the rationality of chemistry microcosmic cognition attribute to that it explains and pre-estimate the properties of substances from microcosmic view.The basic ideas to develop the students' understanding of science essence include:(1) make epistemology thinking with the frame of WWHW,(2) construct the teaching objects of science essence understanding with the basic technology of crossing consideration,(3) design the teaching subjects which have epistemology meaning,(4) develop science essence understanding by dominant words,(5) develop science essence understanding by reflecting activities,(6) properly evaluate students' understanding of science essence