黑洞的发现能教会我们什么

<正>As long as we walk this earth, one thing we should all discover is this. The more you know,the more you know you don't know. That's a quote~1 from Aristotle, the Greek philosopher who lived over 2,300 years ago. It basically~2 means that no matter how much we learn in school as kids and later in life as adults, we'll find there's always more to learn about everything.     

What Can the Teacher Learn in the Classroom?

Our research is concerned with teacher’s knowledge, and especially with teacher’s processes of learning, in the classroom, from observing and interacting with students’ work. In the first part of the paper, we outline the theoretical framework of our study and distinguish it from some other perspectives. We argue for the importance of distinguishing a kind of teacher’s knowledge, which we call didactic knowledge. In this paper, we concentrate on a subcategory of this knowledge, namely observational didactic knowledge, which grows from teacher’s observation and reflection upon students’ mathematical activity in the classroom. In modeling the processes of evolution of this particular knowledge in teachers, we are inspired, among others, by some general aspects of the theory of didactic situations. In the second part of the paper, the model is applied in two case studies of teachers conducting ordinary lessons. In conclusion, we will discuss what seems to be taken into account by teachers as they observe students’ activity, and how in-service teacher training can play a role in modifying their knowledge about students’ ways of dealing with mathematical problems.     

Robots in the Classroom:

No abstract available for this article.     

Preparing Mathematics Teachers to Teach English Language Learners: What We Know and What We Can Do

Abstract

A recent issue of The Educational Forum contained eight articles theming the preparation of teachers for linguistically-diverse classrooms. This article extends that discussion, and in it this scholar introduces practicalities for mathematics teachers in linguistically-diverse classrooms, and provides suggestions for teacher educators whose target audience is prospective mathematics teachers. The author’s intention is to contribute to the discussion of supporting ELLs in mathematics classrooms, and to advance the praxis for teachers and teacher educators.     

德育的明智策略:教人学会做人

长期存在于德育中的主要问题是:抽象、空洞、形式、无效。具体表现为:第一,德育目标抽象,过于口号化和理想化。第二,德育内容单一、枯燥,政治性过强。第三,德育方法重强制与灌输,忽略引导、体验与身体力行;重形式和运动,轻平时、持久与小事。第四,德育评价空洞、千篇一律。其结     

语文课堂,我们要让学生收获些什么

语文教学改革的关键在于观念的改革。陈旧的以“教”为主的观念已经滞后于时代的要求。时代要求“终身学习能力”和“自我教育能力”,围绕这些能力的培养,语文教师该怎么做呢?     

Educational Psychology: What Do We Teach, What Should We Teach?

Teacher education students sometimes question the value of educational psychology courses even though educational psychology textbooks are primarily concerned with understanding and improving classroom teaching and learning. A survey of current educational psychology textbooks and instructors reveals that (a) most texts cover a wide variety of topics, (b) instructors rate most of these topics as important, (c) there are large variations in depth of coverage among texts, and (d) all texts contain numerous classroom applications. The questionable reputation of the educational psychology course may stem from its broad coverage. A dozen or more topics in one semester may decrease the probability that most students will achieve a solid grasp of any one topic, leaving students uncertain about the course's meaning and applicability. A proposed solution is to offer the introductory course as a two-semester sequence, with the second course offered as an elective.     

What History Can Teach Us About Science: Theory and Experiment, Data and Evidence

Scientists often use more than the results of experiment to arrive at a result; they use anticipation and analogy to arrive at the results that fit their theories, and sometimes they correct results in the light of analogy. They also need to be clear about the difference between accuracy and precision. They do all this using not only theories, but also apparatus, and the interplay between apparatus and the development of concepts and theories is often crucial. Historians of chemistry (notably including the recent work of Usselman, Rocke, and Holmes) furnish us with plenty of examples of such interplay, and of the selection of data in the light of theory. Lavoisier, Dalton, and Liebig can each teach us a good deal about the way that good scientists arrive at reproducible results.     

Six Classroom Exercises to Teach Natural Selection to Undergraduate Biology Students

Students in introductory biology courses frequently have misconceptions regarding natural selection. In this paper, we describe six activities that biology instructors can use to teach undergraduate students in introductory biology courses how natural selection causes evolution. These activities begin with a lesson introducing students to natural selection and also include discussions on sexual selection, molecular evolution, evolution of complex traits, and the evolution of behavior. The set of six topics gives students the opportunity to see how natural selection operates in a variety of contexts. Pre- and postinstruction testing showed students’ understanding of natural selection increased substantially after completing this series of learning activities. Testing throughout this unit showed steadily increasing student understanding, and surveys indicated students enjoyed the activities.     

Practicing What We Teach: A Self-Study in Implementing an Inquiry-Based Curriculum in a Middle Grades Classroom

A science teacher educator returned to teaching adolescents after more than 10 years in the professoriate. We studied his beliefs, practice and daily use of inquiry pedagogy while implementing a reform-based curriculum. Reflection on practice was evidenced by a weekly journal, classroom observations and debriefings, and extensive interviews. Newly developed practical knowledge from this experience shifted the science teacher educator’s beliefs away from the Piagetian structuralism espoused in prescribed curricula towards a more culturally responsive, student-driven approach to teaching science to middle grades students. The merits and limitations of curricula attempting to follow traditional scientific practices are discussed.     

Learning What It Takes to Teach Science: High School Students as Science Teachers for Middle School Students

This study examines the influence of St. John's University Summer Science Experience and Teacher Mentoring Program on African American and Hispanic high school students' interest in science and science teaching as career goals. In the first phase of the program, high school students from six school districts in Suffolk County, Long Island (a suburb of metropolitan New York City) engaged in investigative science experiences that emphasized environmental science, chemistry, and technology and learned about effective science pedagogy. The second phase of the program functioned as a teaching practicum for the high school students, where they planned for instruction and taught middle school students investigations similar to those that they had engaged in during the summer program. Various surveys were developed to assess high school students' attitudes about science and science teaching, knowledge of effective teaching approaches, knowledge of ways to motivate younger students, and the overall impact of the program on the high students' interest in science and/or science teaching as career goals. Program evaluations reveal that over 75% of the students expressed an interest in considering science or science teaching as career possibilities. Implications for minority teacher recruitment are discussed.     

浅谈英语课堂教学

在英语教学中,通常有三种最常见的课堂教学法,即语法翻译法、听说教育法和实际法。由 于这些方法有各自的优点和缺点,因此,在课堂教学中,应该根据所教授的内容采用合适的 教学方法,以提高学生的英语水平。     

Language,Experience and Professional Learning (What Walter Benjamin Can Teach Us)

This essay raises questions about how language educators might construct and further develop their epistemology of practice in and through the situations in which they work from day to day. The occasion for this paper is our work as guest editors of a special issue of L-1: Educational Studies in Language and Literature, when we invited L1 teachers to reflect on the role that language plays in their professional learning, whether it be in the form of conversations with peers, reflective writing, or by other means. We begin this essay by locating our reflections within our current policy context, namely the standards-based reforms that have come to dominate educational thinking around the world, offering a brief critique of the values and attitudes embedded within them. We then outline a philosophical framework as an alternative to the world-view reflected by such reforms, focusing specifically on the work of Walter Benjamin. In the final sections, we review our work as guest editors of the special issue of L-1, reflecting on what we have learned from the papers we have assembled for this issue, and locating our learning within the philosophical framework that we have drawn from Benjamin. We argue that it is timely for language educators to articulate the assumptions that inhere within their work, in contradistinction to the common sense embedded in standards. Thus we might begin to reconceptualise the relation between language, experience and professional learning in opposition to the hegemony of standards.     

Mentoring Women Doctoral Students: What Counselor Educators and Supervisors Can Do

Based on the experiences of two women completing their university doctoral programs, these case studies offer information about the components of mentoring relationships that facilitate women's performance in higher education.     

The Riddle of the Smart Machines

Hundreds of graduate students were introduced to the fields of instructional design and educational technology with the riddle of the smart machines, yet over the years no one has answered it correctly. After revealing the surprising answer to this riddle, both the negative and positive impacts of smart machines are analyzed. An example of this is given by developing practical interventions for the shortcomings of the award-winning simulation program The Oregon Trail.     

English Movie:A Smart Method to Teach English

English movies are the cultural carriers of English-speaking countries with veritable colloquial expressions, authentic environment and abundant cultural connotation. Teaching English through English m...     

未来课堂:智慧学习环境

未来课堂的设计与应用已经成为教育技术学研究的一个新领域,智能性是未来课堂的重要特性之一。未来课堂应为课堂主体而建,终极目标在于促进学习者的个体学习和社会化学习,以促进学习者的发展,它是一个充分发挥课堂主体的主动性、能动性,和谐、自由发展的教与学环境与活动的智慧学习环境。未来课堂不仅是一个智能化的学习空间,还应体现出对课堂主体教与学活动支持的智慧性。智慧性主要体现技术层面、环境层面和资源和服务层面等方面,其实现技术主要包括硬件技术和软件技术两个层面,其中硬件技术主要包括所有设备之间的智能互联技术、多功能交互设备技术;软件技术则主要是指各主体间的信息传输技术、控制技术及信息的推理技术等。     

English Movie:A Smart Method to Teach English

English movies are the cultural carriers of English-speaking countries with veritable colloquial expressions, authentic environment and abundant cultural connotation. Teaching English through English movies can not only help students learn English language, but also acquire English culture. It’s also an effective way to improve students’ oral English and their accultural communication ability.