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针对学生面对化学实验探究问题无从下手的情况,以物质的分离与提纯这一类探究实验为例,通过“教学评一体化”的教学模式引导学生建立解决“物质分离与提纯”探究实验的一般思路方法。 相似文献
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以“设计净水系统”为项目主题,介绍了项目教学主题选取、项目目标确定、项目规划、实施与评价策略。项目教学中,关注学生认知与思维发展,随着净水系统的设计、制作、测试和再设计项目学习活动的展开,引导学生综合运用化学、物理、数学等多学科知识方法分析解决问题,促进学生提炼真实情境下“物质分离与提纯”解决思路,发展化学学科核心素养,同时体验和感受完整的工程设计过程。 相似文献
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在“物质的分离与提纯”教学中,整合教学内容,从“问题”切入,引导学生对问题进行探究并解决问题,从而自主建构相关知识,收到了很好的教学效果. 相似文献
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立足2011年版课程标准,对"依据化学方程式的计算"一课的教学要求、教学目标和教学内容进行认真分析,深入挖掘蕴含在化学方程式计算这一技能性知识及其学习过程中的观念和方法。通过创设教学情境、加强多重表征的联系和大胆突破传统化学方程式计算教学的模式,引导学生感受化学方程式计算的意义和价值,感悟化学方程式计算的依据和本质,学习化学方程式简单计算的过程和方法,在帮助学生进一步从定量的角度认识化学变化规律的同时,促进学生"物质的变化观"和"化学的价值观"等基本学科观念的形成。 相似文献
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以“生物质橘皮果胶的提取及工艺流程设计”为主题,聚焦“生物质资源利用”社会热点问题,围绕有机化学、实验化学、工艺流程等高中化学重点知识开展项目式教学。引导学生完成有机物结构与性质探析、实验设计与优化、果胶提取及工艺流程设计等活动,深化对“结构决定性质”的理解,形成物质分离提纯的一般思路,构建工艺流程思维模型,体会生物质资源利用的途径和意义,提升其化学学科核心素养及问题解决能力。 相似文献
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食盐的工业生产是一个理想的基于实际问题解决的教学素材。盐场的生产环境安全可考察,学生可以完整地了解所有生产环节,与溶液及粗盐提纯的部分关联较为紧密。本课程以“食盐的旅程—从自然界中的盐到餐桌上的盐”为项目主题,开展初中化学“溶液和粗盐提纯”的教学。通过赴大清河盐场考察,针对食盐生产过程中纳潮、晒盐、收盐、洗盐中的问题展开讨论,解释生产过程的核心环节和关键问题,模拟食盐生产过程,自主建构饱和溶液、溶解度等概念,掌握溶解、过滤、蒸发等基本操作技能,建立物质分离的模型。 相似文献
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In response to the impact of the Covid-19 epidemic on organic chemistry laboratory teaching, this article analyzes and discusses the current limitation of traditional organic chemistry laboratory teaching. Taking the "preparation of n-bromobutane" as an example, a new "online-offline and virtual-actual combination" teaching mode with the combination of "Tencent Meeting, MLabs, laboratory and WeChat group" is introduced. The practice of the new mode of teaching includes the following steps: pre-class online guiding by teacher, student preview and practice based on the virtual simulation platform, students and teacher discussion and operation in laboratory, and post-classcomprehensive assessment and Q&A", and good teaching effects have been received. It is significant in cultivating and improving the independent innovation and practical ability, and provides reference for the organic chemistry laboratory teaching reform and also lays a foundation for the construction of "outstanding course" of organic chemistry. 相似文献
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The COVID-19 broke out on a large scale, and online teaching became the first choice for teachers. Avoiding network congestion and ensuring learning effects are the dilemmas faced by online teaching. With the help of the UOOC platform and the Tencent Classroom, taking the "Polymer Structure and Performance" course as a sample, we suggested a new "online asynchronous teaching" model. Among them, the SPOC course is convenient for students to manage their learning time; "Chapter Quiz" and "Student-to-Student Mutual Evaluation" are helpful for students to obtain multi-angle feedback; project tasks are focused on case analysis so that students carry out inquiry-based learning. Overall, the "online asynchronous teaching" model breaks the time and space restrictions on teaching and learning, guarantees the quality of teaching during the epidemic, and lays the foundation for creating a "golden class". 相似文献
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Since the outbreak of novel coronavirus pneumonia (NCP) at the beginning of this year, Chinese government acted immediately and made some regulations to control the epidemic NCP and promote the recovery of society and industry including education. Chinese universities stayed on the online courses without suspension on teaching and learning. Herein, we report online teaching of structural chemistry course based on the teaching mode of online live broadcast platform, online course resources and management platforms ("1 + 2" mode). This may promote online teaching, and take advantage of online live broadcast and massive open online courses, which achieves good teaching and learning experiences on structural chemistry course. 相似文献
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在《高分子化学》课程中开展互动式教学的实践与探索 总被引:2,自引:0,他引:2
通过在"高分子化学"课程中开展师生互动式教学,探讨了运用互联网网站、网上论坛和学生上讲台作学术报告等方式对提高学生学习积极性、促进专业课程教学改革、提高教学质量的作用.介绍了所采用的具体做法,并就互动式教学的开展总结了个人的体会. 相似文献
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从高分子化学课程的特点和教学现状出发,针对应用化学的专业特点和培养目标,从课堂内和课堂外2个层面入手,注重理论和实践的有机结合,进行高分子化学课程多维互动教学模式的探索。通过多维互动教学模式的开展不断激发学生学习的激情,培养学习兴趣;结合教学内容提供学生更多自主探索和思考的空间,提高学生主观能动性;从学生的需求和专业发展的角度,逐步提高学生专业素养和专业能力,切实提高课程的教学效果。 相似文献