Reducing the prior-knowledge achievement gap by using technology-assisted guided learning in an undergraduate chemistry course     

Anna J. Lou  Susanne M. Jaeggi 《科学教学研究杂志》2020,57(3):368-392

There have been many practical obstacles for teachers to implement evidence-based educational technology, especially in STEM classrooms. By implementing learning principles related to Cognitive Load Theory, we developed an innovative Technology-Assisted Guided Learning (TAGL) approach and its web-based instructional tool, combining expertise from educational research and best teaching practices to enhance guided student-centered learning in chemistry. A total of 185 community college students were randomly assigned to learn stoichiometry through either TAGL or one of two active control interventions, traditional direct instruction and Khan Academy, a widely used web learning platform. We found that the TAGL group significantly outperformed both active control groups immediately after instruction, and furthermore, despite the fact that all groups received additional instruction in stoichiometry, the beneficial effects of TAGL compared to the control groups were maintained a month later. Notably, TAGL was able to eliminate the achievement gap between students with low prior knowledge and students with high prior knowledge. Furthermore, prior-knowledge activation was found to be especially beneficial for students with low prior knowledge. Our work contributes to existing research in learning theories and provides new insight toward the development of more effective and adaptive instructional designs. By translating research into practice, this study demonstrates the great potential of using innovative computer-based technology to improve student learning for all.  相似文献   

问题解决的信息机制     

刘春年  娄策群 《情报科学》2004,22(7):878-880

阐述了信息科学中的一些基本问题，并利用信息科学的观点对问题解决理论进行了分析和总结，从而对问题解决概念、影响因子与问题解决过程中的信息活动模式和信息机制有了新的比较深入的认识。所得结论对问题解决方法研究和表象与环境相互作用的系统设计具有一定的参考价值。  相似文献   

基于公共描述框架的文献采集指标体系用户准则分解     

周群芳  罗志尧 《情报杂志》2007,26(6):124-127

文献选择是文献采集的核心，文献选择的基本原理是在成本相同的情况下，优先选择概率使用价值大的文献。文献的概率使用价值运用层次分析法分解后，需要一个相应的描述空间来实现，即公共描述框架。公共描述框架是一个文献集的学科等级结构框架，文献采集指标体系中与用户有关的准则可以基于这个框架加以分解。  相似文献   

基于ISM-Fuzzy AHP的我国中小企业核心竞争力要素分析   总被引：5，自引：0，他引：5  

楼迎军  荣先恒 《科研管理》2007,28(1):97-103

本文首先基于已有研究及调研结果,采用主成分分析法选出7个核心竞争力要素,并以苏州、杭州中小企业为例,通过问卷调查获取数据,并运用ISM-Fuzzy AHP模型分析法对中小企业核心竞争力要素进行实证研究。分析表明,我国企业已日益重视对人力资源、技术创新、市场营销、组织管理能力等核心竞争力要素的培育,但对企业文化的塑造仍不够重视。  相似文献   

新型含硫萃淋树脂吸附贵金属的研究：石油亚砜萃淋树脂吸附富集金     

楼芳彪  钱跃言 《科技通报》1995,11(5):280-284

测定了石油亚砜萃淋树脂的吸附性能，其饱和吸附容量Ｑ＝９０ｍｇＡｕ／ｇ树脂，金的吸附反应速率常数Ｋ＝１．０２×１０￣（－３）ｓ￣（－１），热焓△Ｈ＝－６．７０ｋＪ／ｍｏｌ，自由能变化△Ｇ￣（２９８）＝－２０．５９ｋＪ／ｍｏｌ，熵变△Ｓ＝４６．６Ｊ／ｍｏｌ·Ｋ．树脂吸附金的反应符合Ｆｒｅｕｎｄｌｉｃｈ等温吸附式．探讨了树胎吸附金的反应机理．用酸性硫脲或亚硫酸钠溶液均能定量洗脱吸附在树脂上的Ａｕ（Ⅲ），树脂可再生使用．  相似文献   

Antepartum hemorrhage from previous-cesarean-sectioned uterus as a potential sign of uterine artery pseudoaneurysm     

Ning Zhang  Wei-hua Lou  Xue-bin Zhang  Jian-hua Lin  Wen Di 《Journal of Zhejiang University. Science. B》2017,18(5):441-444

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发达国家职业技术教育教学改革的特点和趋势   总被引：4，自引：0，他引：4  

娄立志 《继续教育研究》2003,(1):84-86

本归纳了发达国家职业技术教育课程设置的基础性、教学计划的弹性化、教学要求的实用性以及教学方式的灵活性等特征，并试评了发达国家职业技术教育教学发展的新动向。  相似文献   

Attention and curiosity in museums     

John J. Koran  Laura Morrison  Jeffrey R. Lehman  Mary Lou Koran  Luisa Gandara 《科学教学研究杂志》1984,21(4):357-363

Two hundred and thirty-four museum visitors of all ages were observed as they entered the Object Gallery area of the Florida State Museum. Visitors were observed under conditions where objects were available for close inspection but could not be manipulated (baseline data) and later when the same objects were placed on tables and were available for visitors to touch, move, and use a variety of senses to inspect them (intervention data). Data were recorded on the sex, age, and number of subjects in these areas under each of the above conditions. The results obtained show a significant increase in the number of visitors entering this section of the museum when manipulatable objects were available. Baseline data showed that 58.5% of the people who entered the Object Gallery went into the drawer section. However, when manipulatable objects were made available this increased to 82.3%. Chi-square analysis was used to determine whether the presence of manipulatable objects in the area increased the number of people who entered the area. It did (p < 0.05). Chi-square analysis was also used to determine whether entering the drawer section depended on age or sex. It was found that more children entered the drawer section than adults (p < 0.05) and significantly more female children and female adults entered as a result of intervention (p < 0.05). At the same time, more male children than adults entered after intervention (p < 0.05) than before. These data are supported by considerable curiosity research indicating that both children and adults are attracted to novel as well as complex stimuli which can be manipulated in both formal and free-choice environments. The data also support the growing movement to hands-on exhibits in natural history museums and science centers around the country, as well as hands-on classroom activities from the perspective of their attention attracting and holding power and their curiosity evoking characteristics. Whether these positive factors also lead to increased knowledge or skill development is a question yet to be explored.  相似文献   

例析引导学生深度学习的生物学教学策略     

娄志义 《中学生物学》2021,(2):78-80

深度学习是一种基于高阶思维发展的理解性学习,指学生在主动加工、深度理解的基础上,能够批判性地学习新知识,并将它们融入原有的认知结构中,经过高水平思维过程,灵活运用所学知识和能力,解决实际问题的一种学习方式。新课程改革强调学科核心素养的培养,其中培养学生科学思维是重要内容,而高阶思维的培养更是关键,因此有必要研究指向深度学习的教学策略,以通过促进学生的深度思维加工,从而培养学科核心素养。同时,生物学科的自然科学属性也要求教师在教学中必然渗透深度学习。那么,如何在生物学教学中促进学生深度学习?  相似文献   

Application of Affect to CALL     

李露 《和田师范专科学校学报》2006,26(3):136-138

0. Introduction Since there is not yet any further research on affect in CALL, this paper will attempt to discuss the affect in CALL, and through this educators on the one hand should make good use of CALL, on the other hand they should control or deal wi…  相似文献