“一核三阶六化三省”的大学物理在线教学设计与实践

本文对大学物理在线教学的设计进行了探索和实践,我校的大学物理在线课程依托雨课堂、智慧树等教学平台,构建了基于自主学习、以人才培养为核心线上教学模式.通过课前预习、课中翻转、课后巩固三阶段,实现了育人同向化、教学精准化、难度阶梯化、研讨开放化、思维独立化、互动全员化的培养过程,通过平台数据、督学和学生反馈、教师互评进行反思和提升,形成基于自主学习的“一核三阶六化三省”的在线智慧教学,实践证明这种教学设计推动了将课内和课外分开的教学格局转变成依托网络信息技术手段的课堂内外一体化建设.     

高职院校课堂教学质量影响因素研究——基于Lasso-logistic回归模型

本文以"大学生课堂学习状态问卷"调查为基础,利用Lasso-logistic回归模型对安徽省某高职学院336位学生成绩的影响因素进行分析。结果表明,影响客观评价结果的因素包括性别、父母亲文化程度等个人、家庭因素及学习勤奋刻苦程度等直接相关因素;而影响主观评价结果的因素则主要为学习勤奋刻苦程度、学习目标等直接相关因素,而不包括个人、家庭因素。     

THE INNOVATIVE TRAINING SYSTEM FOR INTERNATIONAL TALENTS IN ENGINEERING HIGHER EDUCATION UNDER THE BELT AND ROAD POLICY1)

"一带一路"战略为深化我国与沿线国家的教育交流合作提供了重要契机,也为我国的新工科人才培养体系的理论研究与教育实践开拓了新视野,提出了新挑战。在以新技术、新业态、新模式、新产业为代表的新经济蓬勃发展的大背景下,对工程科技人才提出了更高要求。建设具有新理念、新结构、新体系、新质量、新模式的新工科,迫切需要借助国际化加快工程人才教育体系的改革创新。构建面向"一带一路"的工程教育国际化新体系,面向新工科人才培养,密切结合"一带一路"沿线各国工科人才培养的实际情况,以工程力学、航空航天工程、机械工程等专业的国际化联合培养为抓手,深入研究面向新工科建设的"一带一路"工程教育国际化新体系。     

基于OBE理念的混合式教学模式在无机及分析化学课程中的实践*

为提升教学质量,基于成果导向(OBE)理念,采用混合式教学模式,从预期学习产出制定、教育投入与教学过程、评估学习产出等方面对该课程进行了教学改革,并通过教改效果的评价提出持续改进意见。实践表明:在OBE理念下,包括课堂教学与网络教学混合、教学资源混合、教学方法混合、教学活动混合、评价方法混合等方面的混合式教学模式能较好地提升教学质量,有助于学生综合素质的提高,但该教学模式还有待进一步完善。     

中学化学教学动画研究进展*——基于CERP和《化学教育》期刊的文献比较分析

对Chemistry Education Research and Practice(简称CERP)和《化学教育》在2010-2019年涉及中学化学教学动画的发文情况、研究主题和表现形式进行了分析和对比,2刊中关于动画教学的刊文量在近2年都明显加大了,且研究重心都在交互式动画的开发和教学运用研究等方面,但所研究的化学教学主题有较大的差异,CERP多为三维表征、氧化还原、化学结构等方面,而《化学教育》多为具体知识点。介绍了从CERP遴选的典型文章,以期为国内化学教育工作者提供一些参考。     

新时代中等职业教育化学基础课改革趋势研究*

为了贯彻落实《国家职业教育改革实施方案》,教育部颁布的《中等职业学校公共基础课程方案》进一步确立了中等职业学校化学基础课的地位和作用。系统研究了新时代中等职业教育面临的形势与任务、化学基础课改革历程以及化学课程标准凸显出的中职化学课程改革的新理念,并分析了新课标对中职化学教师的新要求。     

Photoredox Catalysis Using Heterogenized Iridium Complexes**

Heterogenized photoredox catalysts provide a path for sustainable chemical synthesis using highly tunable, reusable constructs. Here, heterogenized iridium complexes as photoredox catalysts were assembled via covalent attachment to metal oxide surfaces (ITO, ZrO₂, Al₂O₃) in thin film or nanopowder constructs. The goal was to understand which materials provided the most promising constructs for catalysis. To do this, reductive dehalogenation of bromoacetophenone to acetophenone was studied as a test reaction for system optimization. All catalyst constructs produced acetophenone with high conversions and yields with the fastest reactions complete in fifteen minutes using Al₂O₃ supports. The nanopowder catalysts resulted in faster and more efficient catalysis, while the thin film catalysts were more robust and easily reused. Importantly, the thin film constructs show promise for future photoelectrochemical and electrochemical photoredox setups. Finally, all catalysts were reusable 2–3 times, performing at least 1000 turnovers (Al₂O₃), demonstrating that heterogenized catalysts are a sustainable catalyst alternative.     

电磁学课程思政资源的挖掘——以渗透辩证唯物主义思想为例

本文通过深入挖掘电磁学课程所蕴含的辩证唯物主义思想元素,结合丰富的具体教学案例,阐述如何将辩证唯物主义观点和方法潜移默化地渗透到电磁学的教学中,从而推进电磁学课程思政的内涵建设.这不但使学生深刻理解和掌握电磁现象的本质和规律,而且有助于学生树立辩证唯物主义的世界观,增强辩证思维能力.     

Understanding authority in small-group co-constructions of mathematical proof

Authority becomes shared in mathematics classrooms when perceived sources of valid mathematical knowledge extend beyond the teacher/textbook and allow both students and disciplinary modes of reasoning to hold authority. The goal of this research is to better understand classroom situations that are intended to facilitate shared authority over proof, namely small-group episodes where students are granted authority (Gerson & Bateman, 2010) to co-construct mathematical proofs. We sought to better understand the content of undergraduate students’ attention during group proving and the sources of legitimacy for students. Using Stylianides’ (2007) definition of proof as an analytical frame, we found that student discourse focused primarily upon the mode of argumentation, followed by the mode of argument representation, and then the set of accepted statements. We identified four themes with respect to the sources of authority students relied upon in their group proving: (1) the course rubric, (2) peers’ confidence, (3) form and symbols, and (4) logical structure. Implications for research and practice are presented.     

An examination of pre-service mathematics teachers’ ethical reasoning in big data with considerations of access to data

Implementations of Big Data analysis are reshaping society. The novel ways mathematics operate in society warrants new efforts for mathematics education, both in teaching the new technology and in providing an ethical and critical awareness of its implications. This interview study investigates pre-service teachers' ethical reasoning in data science contexts, focusing on aspects of access to the data that underpin the technology. Findings show that pre-service teachers offer a wide array of ethical arguments related to access to data, that informs their effort to think critically on oppressive situations. However, there is also an indication that their reasoning can be limited by lacking understanding of the related data science methodology, implying that mathematics teacher education should encompass more of this.