珠江三角洲农田黄毛鼠种群动态分析

根据1987～1990年和1992～1993年虎门镇农田调查的数据为依据．全面系统地研究和分析了黄毛鼠种群动态的基本特征，包括性比、年龄组成、繁殖强度等．同时，研究了种群季节迁移和季节变化．研究表明．黄毛鼠种群每年有两个繁殖高峰期和一个数量高峰期．     

The interrupted learner: How distractions during live and video lectures influence learning outcomes

New instructional technologies have been increasingly incorporated into the medical school learning environment, including lecture video recordings as a substitute for live lecture attendance. The literature presents varying conclusions regarding how this alternative experience impacts students' academic success. Previously, a multi‐year study of the first‐year medical histology component at the University of Michigan found that live lecture attendance was positively correlated with learning success, while lecture video use was negatively correlated. Here, three cohorts of first‐year medical students (N = 439 respondents, 86.6% response rate) were surveyed in greater detail regarding lecture attendance and video usage, focusing on study behaviors that may influence histology learning outcomes. Students who reported always attending lectures or viewing lecture videos had higher average histology scores than students who employed an inconsistent strategy (i.e., mixing live attendance and video lectures). Several behaviors were negatively associated with histology performance. Students who engaged in “non‐lecture activities” (e.g., social media use), students who reported being interrupted while watching the lecture video, or feeling sleepy/losing focus had lower scores than their counterparts not engaging in these behaviors. This study suggests that interruptions and distractions during medical learning activities—whether live or recorded—can have an important impact on learning outcomes. Anat Sci Educ 11: 366–376. © 2017 American Association of Anatomists.     

A Comprehensive Approach to Technology Training for Early Childhood Teachers

This study describes the development and implementation of a comprehensive approach to computer technology training for early childhood teachers. Departing from the singular goal of conveying skills and knowledge, a comprehensive program targets the development of teachers' attitudes and practices as well as knowledge and skills. All 3 areas are regarded as equally important for the development of teacher technology proficiency. Evaluation of the program documented its effectiveness. Compared to nonparticipants, teachers in the training program had significantly higher scores in all 3 goal areas: attitudes, knowledge and skills, and practices. Results of the study indicate that a comprehensive approach is an effective means of training teachers in computer technology. Implications of the study are discussed with regard to the strategy of developing the “whole teacher” and emergence of the domain of educational technology.     

浅谈数学教学中思维独创性的培养

数学教学的重要目的在于培养学生的数学思维能力,而思维能力反映在思维品质上.思维独创性是数学思维的重要品质,是在主体思维发展的过程中逐步形成和稳定化的,因而在其形成和发展时期具有可培养性.     

A General Framework for the Validation of Embedded Formative Assessment

In educational practice, test results are used for several purposes. However, validity research is especially focused on the validity of summative assessment. This article aimed to provide a general framework for validating formative assessment. The authors applied the argument‐based approach to validation to the context of formative assessment. This resulted in a proposed interpretation and use argument consisting of a score interpretation and a score use. The former involves inferences linking specific task performance to an interpretation of a student's general performance. The latter involves inferences regarding decisions about actions and educational consequences. The validity argument should focus on critical claims regarding score interpretation and score use, since both are critical to the effectiveness of formative assessment. The proposed framework is illustrated by an operational example including a presentation of evidence that can be collected on the basis of the framework.     

改良的二维电泳法分离水稻小穗蛋白

介绍一种适于植物材料的二维电泳方法,并对其中各有关步骤进行了讨论。该方法特別适于含干扰等电聚焦,及含使背景显色杂质的植物材料的全蛋白分离,并可获得较高分辨率及稳定的二维电泳图谱。文中还利用这种二维电泳技术,比较了籼型广亲和水稻、籼稻,粳型广亲和水稻、粳稻小穗的蛋白质差异。     

Learning oceanography from a computer simulation compared with direct experience at sea

Considerable research has compared how students learn science from computer simulations with how they learn from “traditional” classes. Little research has compared how students learn science from computer simulations with how they learn from direct experience in the real environment on which the simulations are based. This study compared two college classes studying introductory oceanography. One class learned using an interactive computer simulation based on a dynamic, three‐dimensional model of physical oceanography. The other class learned by spending a day on a research ship using scientific tools and instruments to measure physical properties of the ocean directly. In classes preceding and following the simulation or field experience, students performed the same exercises regarding currents and salinity, had the same instructor presentations, and did the same homework. The study found that the field experience helped contextualize learning for students with little prior experience of the ocean while the simulation made it easier for students to connect what they learned from it to other content they learned in class. These and other findings shed light on what computer simulations can and cannot help students learn, and what concepts are best learned in the real environment. © 2005 Wiley Periodicals, Inc. J Res Sci Teach 43: 25–42, 2006     

立体异构分子模型的简易制作及其应用

立体异构是有机化学课的重点教学内容，在教学实践中探索出以橡皮泥为原料制作简易立体异构分子模型的方法。结果表明：制作和应用分子模型辅助教学，培养了学生的动手能力和创新意识，建立了空间观念，收到了较好的教学效果。