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"化学连连看"游戏是将化学反应中的物质设计成"实物卡片"或"电子按钮",游戏中说明化学反应的方程式而收取卡片的桌面游戏;或点击化学反应的电子按钮而消失并计分的电子游戏。"化学连连看"游戏应用于化学反应的教师教学和学生学习,更新了教学方式,改变死记硬背的记忆方法,寓教于乐、寓学于乐。 相似文献
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论化学学习中的能量观建构 总被引:1,自引:1,他引:0
能量观是中学化学学习中的核心观念。能量观的建构有利于学生形成核外电子运动的能量思维方式,了解从能量的角度研究物质及其转化的思维方法等。能量观建构的基本策略是:(1)在物质的微粒性认识学习中形成物质的微粒具有热能的观念;(2)在原子结构学习中形成核外电子运动的能量思维方式;(3)在元素及其化合物学习中发展高能量的最外层电子不稳定的认识;(4)在化学变化现象的积累学习中强化物质转化伴随有能量变化的认识;(5)通过化学键概念及其理论学习理解物质转化过程中伴随有能量变化;(6)在影响化学反应速率的条件讨论中深化理解有效碰撞理论;(7)在化学热力学问题研究中进一步理解能量守恒;(8)利用概念图技术帮助化学能量观的建构。 相似文献
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化学学习中的心理障碍因素会严重影响学生形成健康的学习心理,影响学习效果。通过一学年的实验,在实验班进行了学法指导和心理辅导。结果显示,学生心理障碍明显减轻,心理素质有了较大提高,取得了显著的效果。 相似文献
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第二次全国核化学与放射化学学术讨论会1983年9月17日至22日在安徽省屯溪市召开。参加会议的正式代表150人,其中有科学院所属研究所、高等院校、生产部门和地方研究单位、国防科工委所属研究所以及核工业部所属科研和生产部门共48个单位。会上交流学术论文153篇,包括(1)核化学;(2)锕系元素和核燃料后处理化学和工艺研究;(3)萃取和色层分离;(4)放射分析化学的研究和应用;(5)同位素和标记化合物的制备;(6)放射性示踪和应用;(7)辐射化 相似文献
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兴趣是学生学习活动中最活跃的因素,是影响学生学习效果和身心发展的重要因素,也是心理学研究的问题之一。在参阅国内有关兴趣研究的基础上,结合教育学及心理学相关理论和初中化学学科特点,编制了《初中生化学学习兴趣调查问卷》,对河北省内的901名学生进行了调查。研究表明,新课程背景下,河北省内绝大多数初中生对化学学习是感兴趣的,而学生所处地域、学习成绩、家长文化程度的不同都使学生的化学学习兴趣有一些差异,而性别不同学生的学习兴趣没有差异。 相似文献
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利用自编的《化学自我调节学习策略量表》对北京市684名高中生的调查研究显示:自我调节学习策略与学业成绩优、差显著性相关,与成绩中等几乎不相关。动机策略维度上:优等生内在动机较强;学困生缺乏基本学习兴趣;中等生动机不明确。认知策略维度上:优等生主动性较强,思维方法多元,知识结构性较强;学困生没有良好学习习惯,方法单一,知识点零散;中等生对知识加工深度不够。管理策略维度上:优等生对时间、“纠错本”、实验操控等管理能力较强;学困生各方面管理能力都欠缺;中等生管理能力有待提高,并对此提出了相应的教学对策。 相似文献
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Lauv Patel Tripti Shukla Xiuzhen Huang David W. Ussery Shanzhi Wang 《Molecules (Basel, Switzerland)》2020,25(22)
The advancements of information technology and related processing techniques have created a fertile base for progress in many scientific fields and industries. In the fields of drug discovery and development, machine learning techniques have been used for the development of novel drug candidates. The methods for designing drug targets and novel drug discovery now routinely combine machine learning and deep learning algorithms to enhance the efficiency, efficacy, and quality of developed outputs. The generation and incorporation of big data, through technologies such as high-throughput screening and high through-put computational analysis of databases used for both lead and target discovery, has increased the reliability of the machine learning and deep learning incorporated techniques. The use of these virtual screening and encompassing online information has also been highlighted in developing lead synthesis pathways. In this review, machine learning and deep learning algorithms utilized in drug discovery and associated techniques will be discussed. The applications that produce promising results and methods will be reviewed. 相似文献
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通过借鉴和优化国内外学习动机、学习效能感与学习成绩的关系问卷,调查了武汉某中学220名高二学生化学学习动机和学习效能感与学习成绩的关系。通过对回收问卷进行描述性统计、t检验、相关分析和中介效应检验等,得出以下结论:(1)高中生化学学习动机和学习效能感均处于中上等水平,其中化学学习动机由内部动机和外部动机共同主导,学习效能感由学习能力效能感主导。(2)不同性别学生在内部动机和学习效能感及各维度上存在显著差异,且表现为男生得分普遍高于女生;不同班级学生在化学学习动机、学习效能感及各维度上均无显著差异。(3)高中生化学学习动机、学习效能感和学习成绩及其各维度间均存在显著的正相关。(4)高中生的学习效能感在化学学习动机和学习成绩间有部分中介效应,具体效应值为0.132,且学习效能感2个维度中的学习能力效能感(效应为0.131)与学习行为效能感(效应为0.132)的中介效应相当。 相似文献
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Protein molecules are inherently dynamic and modulate their interactions with different molecular partners by accessing different tertiary structures under physiological conditions. Elucidating such structures remains challenging. Current momentum in deep learning and the powerful performance of generative adversarial networks (GANs) in complex domains, such as computer vision, inspires us to investigate GANs on their ability to generate physically-realistic protein tertiary structures. The analysis presented here shows that several GAN models fail to capture complex, distal structural patterns present in protein tertiary structures. The study additionally reveals that mechanisms touted as effective in stabilizing the training of a GAN model are not all effective, and that performance based on loss alone may be orthogonal to performance based on the quality of generated datasets. A novel contribution in this study is the demonstration that Wasserstein GAN strikes a good balance and manages to capture both local and distal patterns, thus presenting a first step towards more powerful deep generative models for exploring a possibly very diverse set of structures supporting diverse activities of a protein molecule in the cell. 相似文献
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学历案是关于学习经历或过程的方案,利用学历案构建一个“以学为主、以教促学”的教学模式,改变了教师的主导地位,凸显了学生的主体地位。笔者尝试借助学历案,以花青素为载体,通过生活化的化学实验,将化学平衡常数K作为分析工具,进行证据推理,以外界条件使花青素溶液颜色变化,到花青素的工业合成为明线;以化学平衡移动的本质到化学平衡移动原理的应用为暗线,双线结合,学生自主建构“化学平衡移动”的认知模型,从而促进深度学习的发生。 相似文献
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In this article, the topic of "chemical principles in warmer pad" is used as an example to illustrate how problem-based learning (PBL) and case learning (CL) are used in the teaching of general chemistry. We take the advantages of PBL to arouse the studying interests of students in the casing learning atmosphere. Moreover, the teacher leads the discussion. By using these two teaching methods properly, students' active learning ability, the skills of analyzing and solving problems, as well as the comprehensive practical ability can be improved. 相似文献
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Before teaching a course, the instructor must identify what she or he intends for the students to learn. For most analytical chemistry instructors, this usually involves an assessment of what methods and techniques to include and at what depth to cover them. There are many other skills, though, that will be important to students for their future success. Most college classes in analytical chemistry are taught in a lecture format. Techniques that can be used to improve the learning that can occur during a lecture are described. An alternative to lecturing is the use of cooperative learning. Cooperative learning offers the potential to develop skills such as teamwork, communication, and problem-solving that are more difficult to impart in a lecture format. The laboratory component of analytical chemistry courses is often an underutilized learning resource. More often than not, the lab is used to demonstrate fundamental wet and instrumental analysis techniques and develop rudimentary laboratory skills. The analytical lab should also be used to develop meaningful problem-solving skills and to demonstrate and have students participate in the entire analytical process. Ways of enhancing the analytical laboratory to include more global skills that are important to career success are described.Received January 12, 2003; accepted March 7, 2003
Published online July 16, 2003 相似文献