The inseparable relationship between language and culture indicates that culture teaching is indispensable in English teaching.The ultimate goal of culture teaching in English teaching is to cultivate learners’cross-...The inseparable relationship between language and culture indicates that culture teaching is indispensable in English teaching.The ultimate goal of culture teaching in English teaching is to cultivate learners’cross-cultural communication skills.Cross-cultural communication is a two-way process,which requires not only knowledge of English culture but also the use of English as a medium for disseminating Chinese culture to the outside world.However,in actual English teaching,the teaching of Chinese culture is a mere formality,and the teaching effect is not obvious.Therefore,it is necessary to conduct a survey and research on Chinese culture teaching in high school English classrooms to understand its current situation,existing problems,and their causes,so as to provide suggestions for Chinese culture teaching in high school.展开更多
The traditional teaching methods of one-way cultivation of students can no longer meet the requirements of talent cultivation at this stage.The issue of how to promote students from passive acceptance to the independe...The traditional teaching methods of one-way cultivation of students can no longer meet the requirements of talent cultivation at this stage.The issue of how to promote students from passive acceptance to the independent cognitive understanding stage(i.e.deep learning)has become the focus of geography teaching.Therefore,under the guidance of deep learning theory,this paper takes the“landforms”knowledge unit of the Humanistic Education Edition as an example,improves the classroom teaching means through the unit teaching mode,reconstructs the“landforms”teaching unit,and explores the specific teaching of high school geography unit based on deep learning.This study provides a good example and guidelines for high school geography teaching and learning.展开更多
With the continuous development of China’s education,the social requirements for high school teaching are constantly improving.The teaching of high school mathematics is a key point in the high school curriculum,but ...With the continuous development of China’s education,the social requirements for high school teaching are constantly improving.The teaching of high school mathematics is a key point in the high school curriculum,but also a major difficulty.Due to the strong logic and abstraction of the content of high school mathematics,some students find it very difficult to learn.In order to solve this problem,high school mathematics teachers can make use of mind maps to teach,so that students can exercise their thinking ability,and realize the improvement of comprehensive ability in mathematics.This paper analyzes the shortcomings of high school mathematics classrooms under the background of new curriculum reform and discusses the significance and methods of applying mind maps in high school mathematics classrooms,so as to put forward reasonable suggestions for realizing the efficient teaching of high school mathematics.展开更多
Reading is the key content of high school English teaching,which can improve students’mastery of words,grammar,and other knowledge,and can expand their horizons.British and American literature is the essence of Briti...Reading is the key content of high school English teaching,which can improve students’mastery of words,grammar,and other knowledge,and can expand their horizons.British and American literature is the essence of British and American culture,and its application in high school English reading teaching can help improve students’English proficiency.This paper outlines the problems of high school English teaching,analyzes the role of British and American literature in high school English reading teaching,and explores the infiltration methods of British and American literature in high school English reading teaching,in order to provide references for teachers.展开更多
Based on the implementation of the new college entrance examination reform policy and the demand of related policies,the choice of subjects for high school students has shifted from the traditional relatively single m...Based on the implementation of the new college entrance examination reform policy and the demand of related policies,the choice of subjects for high school students has shifted from the traditional relatively single model of arts and sciences division to the"3+3"model,and the topic of"how to infiltrate the concept of career education in the teaching process of senior high schools"has become increasingly important.However,at present,the implementation of career education in senior high schools is frequently limited,mainly in the form of class meetings,which instills the concept of career education to students.Therefore,the implementation effect is often not satisfactory.Therefore,experiential learning,a novel and efficient learning method,has entered public's view.Based on relevant research literature at home and abroad,we started with the importance and urgency of implementing career education in high schools,and generally reviewed the research status and future development trends of experiential career education both domestically and internationally.The practical and theoretical significance of the research were explained,and relevant concepts were summarized.Finally,strategic suggestions were proposed for integrating experiential career education concepts into biology teaching in ordinary high schools in China.展开更多
This paper focuses on the multimodal synergistic strategy in high school English teaching.It first briefly reviews the relevant concepts and theories of multimodality and multimodal teaching.On this basis,it employs c...This paper focuses on the multimodal synergistic strategy in high school English teaching.It first briefly reviews the relevant concepts and theories of multimodality and multimodal teaching.On this basis,it employs cases from text books published by People’s Education Press to illustrate how to exert the synergistic effect of multimodal teaching to guide English teaching practice from the perspectives of the English core qualities-listening,speaking,reading,viewing,and writing.The introduction and application of multimodal theory into English teaching practice is conducive to further promoting the“student-centered”English teaching reform,and plays a positive role in the cultivation of high school students’thinking and the improvement of core literacy.展开更多
The use of multimedia technology in the teaching process is the current mainstream trend in teaching development.The arrival of the all-media era is not only a huge challenge to the traditional teaching model,but also...The use of multimedia technology in the teaching process is the current mainstream trend in teaching development.The arrival of the all-media era is not only a huge challenge to the traditional teaching model,but also a huge opportunity for the reform of the teaching model.Combining traditional education models with modern scientific and technological means,and learning from each other’s strengths can stimulate students’subjective initiative in learning.On the other hand,it is also an important way for teachers to improve their teaching abilities.This article analyzes the opportunities brought by the all-media era to the reform of education models based on the teaching status and teaching difficulties of Korean intensive reading courses in vocational high schools,and proposes a teaching model reform strategy for Korean intensive reading courses in vocational high schools in the all-media era.展开更多
This article mainly discusses the application of the concept of life-based teaching in Chinese teaching in senior high schools,so as to improve students’interest in learning and Chinese literacy.Using the method of c...This article mainly discusses the application of the concept of life-based teaching in Chinese teaching in senior high schools,so as to improve students’interest in learning and Chinese literacy.Using the method of combining theoretical analysis and case study,this paper conducts in-depth research on the application of life-based teaching concept in Chinese teaching in high school.This paper analyzes the current situation of the development of life-based teaching concept and its specific application in Chinese teaching in senior high schools,and conducts case studies analysis.The concept of life-based teaching has important application value in Chinese teaching in senior high schools.It can help teachers to better link the teaching content with students’real life,and improve students’learning interest and Chinese literacy.展开更多
With the progress and development of society and the continuous advancement of curriculum standard reform,society has higher requirements for students’English skills.The junior high school stage is the best time to c...With the progress and development of society and the continuous advancement of curriculum standard reform,society has higher requirements for students’English skills.The junior high school stage is the best time to cultivate students’communication skills,however,junior high school English classes are currently still based on traditional teaching as the main teaching method,which only focuses on cultivating students’reading and writing skills,thus neglecting the training of listening and speaking skills.Despite its evident benefits,the implementation of the task-based language teaching(TBLT)method in junior high school English communication classes is not without challenges.The current state of these classes reveals a significant gap in the integration of communicative tasks into the teaching process.This gap stems from a variety of factors,including the lack of appropriate resources,insufficient teacher training,and the deeply ingrained reliance on traditional teaching methods.This study will briefly explain the definition and characteristics of the task-based language teaching method,analyze the current situation of junior high school English communication classes,the difficulties of using TBLT in junior high school English classrooms,and the application methods of task-based teaching methods.The teaching method makes up for the shortcomings of English communication classes in junior high schools and improves the quality of teaching.展开更多
OBE theory focuses on students’learning outcomes and application ability,which is consistent with the requirements of the new curriculum standard.The paper attempts to apply OBE theory to innovate the construction of...OBE theory focuses on students’learning outcomes and application ability,which is consistent with the requirements of the new curriculum standard.The paper attempts to apply OBE theory to innovate the construction of English classroom teaching mode in senior high schools from aspects of teaching aims,teaching activities,teaching assessments and application activities.Results show that the application of OBE in high schools is beneficial to the development of English teaching and students'learning.展开更多
The professional and moral education of high school mathematics teachers will make classroom management work better,but their work pressure will also lead to classroom management problems.To do a good job in high scho...The professional and moral education of high school mathematics teachers will make classroom management work better,but their work pressure will also lead to classroom management problems.To do a good job in high school class teacher management and organically integrate it with mathematics teaching,we need to start from two aspects:mathematics teaching class teachers and class teacher work teaching,and penetrate mathematical thinking into daily classroom management,moral education,and classroom culture construction.Based on the attributes of the subject,we guide high school students to reflect after class to stimulate their self-management initiative through the cultivation of qualified class representatives.In addition,it is necessary to skillfully resolve classroom generative problems,change the roles of teachers and students,and integrate classroom management with mathematics teaching.展开更多
On the basis of the brief introduction to CAI and some its distinctive features,this paper minutely arrives at the principles of the application of CAI in high schools and analyses the implication brought about by its...On the basis of the brief introduction to CAI and some its distinctive features,this paper minutely arrives at the principles of the application of CAI in high schools and analyses the implication brought about by its application.This research is to provide a further help for English teachers in high shools,so that the students can effectively improve the level of English language learning.展开更多
With the deepening of curriculum reform in junior high school,the education field is undergoing tremendous changes.Besides,with the rapid development of the Internet today,students have been exposed to various new med...With the deepening of curriculum reform in junior high school,the education field is undergoing tremendous changes.Besides,with the rapid development of the Internet today,students have been exposed to various new media software since childhood.The existing education and teaching are also desperately keeping up with the pace of the times,and continue to bring online teaching to the practical classrooms of rural middle schools through new media.Teachers should not only impart basic professional knowledge to students,but also improve students'ability to use English.展开更多
On the basis of analyzing the present conditions of country high school English teaching, this paper attempts to justify the feasibility of Cognitive Approach’s application to the country high school English teaching...On the basis of analyzing the present conditions of country high school English teaching, this paper attempts to justify the feasibility of Cognitive Approach’s application to the country high school English teaching and discusses its operation in detail.展开更多
Teaching evaluation is an indispensable part of the teaching system of junior high school.In order to inherit the excellent traditional Chinese culture and arts,traditional Chinese painting has been paid more and more...Teaching evaluation is an indispensable part of the teaching system of junior high school.In order to inherit the excellent traditional Chinese culture and arts,traditional Chinese painting has been paid more and more attention to in the fine arts curriculum of rural junior high school.This paper takes the classroom teaching evaluation of traditional Chinese painting as a form of fine arts in rural junior high school as the research object,and analyzes the problems existing in the classroom teaching evaluation of traditional Chinese painting in rural junior high school.This paper puts forward the corresponding improvement measures from the aspects of comprehensive evaluation object,concrete evaluation content,flexible evaluation language and diversified evaluation subjects,in order to improve the evaluation level of fine arts teachers'classroom teaching,improve students'aesthetic cognition and learning interest in traditional Chinese painting,and cultivate students'innovative thinking and spirit.展开更多
There have been some problems in both vocabulary teaching for teachers and vocabulary learning for students.In light of the new curriculum,this paper summarizes specific presenting methods,memory strategies and ways t...There have been some problems in both vocabulary teaching for teachers and vocabulary learning for students.In light of the new curriculum,this paper summarizes specific presenting methods,memory strategies and ways to revise and consolidate in vocabulary teaching,which may help senior high school teachers in vocabulary teaching.展开更多
Nowadays, flipped classroom has had much recent in higher education, including all kinds of subjects, but a little coverage in high school, especially in English teaching in high school. Therefore, the main purpose of...Nowadays, flipped classroom has had much recent in higher education, including all kinds of subjects, but a little coverage in high school, especially in English teaching in high school. Therefore, the main purpose of this paper is to analyze the foundational English education workers find a good way to meet the demands of paradigm shift and teaching reform.展开更多
The English curriculum standard of ordinary high school(experiment)(the"standard"for short)has maken a hierarchical description of the reading skills,which has put forward higher requirements for the reading...The English curriculum standard of ordinary high school(experiment)(the"standard"for short)has maken a hierarchical description of the reading skills,which has put forward higher requirements for the reading teaching.There are many drawbacks in the current English reading teaching,such as:the outdated teaching philosophy and methods,the changeless teaching models and the old reading materials,the disregardful of students’non-linguistic factors and so on.Therefore,some measures have to be taken to improve high school reading teaching,for example,interdisciplinaring and cultivating students’cultural awareness,broadening students’horizons,focusing on discourse teaching,enhancing students’ability in English thought and expression,reinforcing the training of reading skills,enriching students’means to analyze and solve problems and so on.展开更多
Learning a foreign language is not just a process of mastering the language skills, but also a process of understanding another culture. Thus, by analyzing the relationship between language and culture and the current...Learning a foreign language is not just a process of mastering the language skills, but also a process of understanding another culture. Thus, by analyzing the relationship between language and culture and the current problems in high school English teaching, it introduces several strategies of cultivating students' intercultural awareness in English teaching, so that students can learn English better and communicate with foreigners decently.展开更多
In senior high schools, great importance and attention are required to be attached to grammar teaching and learning. However, a majority of teachers either apply the traditional method or neglect grammar teaching and ...In senior high schools, great importance and attention are required to be attached to grammar teaching and learning. However, a majority of teachers either apply the traditional method or neglect grammar teaching and learning, both of which go against the ideas of the new curriculum of the high school. To solve the problem, based on the constructionist theory, Halliday's theory of register, and the trial-discovery model, the trial-discovery English grammar teaching model was constructed. To find out whether this teaching model is more effective than the traditional grammar teaching, an experimental study of the trial-discovery model in senior English grammar teaching is carried out. This study deals with the problem how we can improve the efficiency of grammar teaching, that is by increasing the students' learning interest and improving the accuracy in English writing. After the analysis of qualitative and quantitative data collected through questionnaires, interviews, and writing tests, the study reveals that the trial-discovery grammar teaching is more effective to stimulate the students' interest in learning grammar, and is more helpful to improve the accuracy and complexity in English writing than the traditional grammar teaching展开更多
文摘The inseparable relationship between language and culture indicates that culture teaching is indispensable in English teaching.The ultimate goal of culture teaching in English teaching is to cultivate learners’cross-cultural communication skills.Cross-cultural communication is a two-way process,which requires not only knowledge of English culture but also the use of English as a medium for disseminating Chinese culture to the outside world.However,in actual English teaching,the teaching of Chinese culture is a mere formality,and the teaching effect is not obvious.Therefore,it is necessary to conduct a survey and research on Chinese culture teaching in high school English classrooms to understand its current situation,existing problems,and their causes,so as to provide suggestions for Chinese culture teaching in high school.
文摘The traditional teaching methods of one-way cultivation of students can no longer meet the requirements of talent cultivation at this stage.The issue of how to promote students from passive acceptance to the independent cognitive understanding stage(i.e.deep learning)has become the focus of geography teaching.Therefore,under the guidance of deep learning theory,this paper takes the“landforms”knowledge unit of the Humanistic Education Edition as an example,improves the classroom teaching means through the unit teaching mode,reconstructs the“landforms”teaching unit,and explores the specific teaching of high school geography unit based on deep learning.This study provides a good example and guidelines for high school geography teaching and learning.
文摘With the continuous development of China’s education,the social requirements for high school teaching are constantly improving.The teaching of high school mathematics is a key point in the high school curriculum,but also a major difficulty.Due to the strong logic and abstraction of the content of high school mathematics,some students find it very difficult to learn.In order to solve this problem,high school mathematics teachers can make use of mind maps to teach,so that students can exercise their thinking ability,and realize the improvement of comprehensive ability in mathematics.This paper analyzes the shortcomings of high school mathematics classrooms under the background of new curriculum reform and discusses the significance and methods of applying mind maps in high school mathematics classrooms,so as to put forward reasonable suggestions for realizing the efficient teaching of high school mathematics.
文摘Reading is the key content of high school English teaching,which can improve students’mastery of words,grammar,and other knowledge,and can expand their horizons.British and American literature is the essence of British and American culture,and its application in high school English reading teaching can help improve students’English proficiency.This paper outlines the problems of high school English teaching,analyzes the role of British and American literature in high school English reading teaching,and explores the infiltration methods of British and American literature in high school English reading teaching,in order to provide references for teachers.
文摘Based on the implementation of the new college entrance examination reform policy and the demand of related policies,the choice of subjects for high school students has shifted from the traditional relatively single model of arts and sciences division to the"3+3"model,and the topic of"how to infiltrate the concept of career education in the teaching process of senior high schools"has become increasingly important.However,at present,the implementation of career education in senior high schools is frequently limited,mainly in the form of class meetings,which instills the concept of career education to students.Therefore,the implementation effect is often not satisfactory.Therefore,experiential learning,a novel and efficient learning method,has entered public's view.Based on relevant research literature at home and abroad,we started with the importance and urgency of implementing career education in high schools,and generally reviewed the research status and future development trends of experiential career education both domestically and internationally.The practical and theoretical significance of the research were explained,and relevant concepts were summarized.Finally,strategic suggestions were proposed for integrating experiential career education concepts into biology teaching in ordinary high schools in China.
基金This paper was sponsored by the following projects:Multimodal Discourse Analysis of New Government Media:A Case Study of Zhejiang Province(Grant No.ZWZD2023005)A Multimodal Discourse Study of Corporate Social Responsibility in the Context of the Coronavirus Epidemic(Grant No.FX2021068)and A Study of Multimodal Teaching of Business English Reading(Grant No.202102107002).
文摘This paper focuses on the multimodal synergistic strategy in high school English teaching.It first briefly reviews the relevant concepts and theories of multimodality and multimodal teaching.On this basis,it employs cases from text books published by People’s Education Press to illustrate how to exert the synergistic effect of multimodal teaching to guide English teaching practice from the perspectives of the English core qualities-listening,speaking,reading,viewing,and writing.The introduction and application of multimodal theory into English teaching practice is conducive to further promoting the“student-centered”English teaching reform,and plays a positive role in the cultivation of high school students’thinking and the improvement of core literacy.
文摘The use of multimedia technology in the teaching process is the current mainstream trend in teaching development.The arrival of the all-media era is not only a huge challenge to the traditional teaching model,but also a huge opportunity for the reform of the teaching model.Combining traditional education models with modern scientific and technological means,and learning from each other’s strengths can stimulate students’subjective initiative in learning.On the other hand,it is also an important way for teachers to improve their teaching abilities.This article analyzes the opportunities brought by the all-media era to the reform of education models based on the teaching status and teaching difficulties of Korean intensive reading courses in vocational high schools,and proposes a teaching model reform strategy for Korean intensive reading courses in vocational high schools in the all-media era.
文摘This article mainly discusses the application of the concept of life-based teaching in Chinese teaching in senior high schools,so as to improve students’interest in learning and Chinese literacy.Using the method of combining theoretical analysis and case study,this paper conducts in-depth research on the application of life-based teaching concept in Chinese teaching in high school.This paper analyzes the current situation of the development of life-based teaching concept and its specific application in Chinese teaching in senior high schools,and conducts case studies analysis.The concept of life-based teaching has important application value in Chinese teaching in senior high schools.It can help teachers to better link the teaching content with students’real life,and improve students’learning interest and Chinese literacy.
文摘With the progress and development of society and the continuous advancement of curriculum standard reform,society has higher requirements for students’English skills.The junior high school stage is the best time to cultivate students’communication skills,however,junior high school English classes are currently still based on traditional teaching as the main teaching method,which only focuses on cultivating students’reading and writing skills,thus neglecting the training of listening and speaking skills.Despite its evident benefits,the implementation of the task-based language teaching(TBLT)method in junior high school English communication classes is not without challenges.The current state of these classes reveals a significant gap in the integration of communicative tasks into the teaching process.This gap stems from a variety of factors,including the lack of appropriate resources,insufficient teacher training,and the deeply ingrained reliance on traditional teaching methods.This study will briefly explain the definition and characteristics of the task-based language teaching method,analyze the current situation of junior high school English communication classes,the difficulties of using TBLT in junior high school English classrooms,and the application methods of task-based teaching methods.The teaching method makes up for the shortcomings of English communication classes in junior high schools and improves the quality of teaching.
文摘OBE theory focuses on students’learning outcomes and application ability,which is consistent with the requirements of the new curriculum standard.The paper attempts to apply OBE theory to innovate the construction of English classroom teaching mode in senior high schools from aspects of teaching aims,teaching activities,teaching assessments and application activities.Results show that the application of OBE in high schools is beneficial to the development of English teaching and students'learning.
文摘The professional and moral education of high school mathematics teachers will make classroom management work better,but their work pressure will also lead to classroom management problems.To do a good job in high school class teacher management and organically integrate it with mathematics teaching,we need to start from two aspects:mathematics teaching class teachers and class teacher work teaching,and penetrate mathematical thinking into daily classroom management,moral education,and classroom culture construction.Based on the attributes of the subject,we guide high school students to reflect after class to stimulate their self-management initiative through the cultivation of qualified class representatives.In addition,it is necessary to skillfully resolve classroom generative problems,change the roles of teachers and students,and integrate classroom management with mathematics teaching.
文摘On the basis of the brief introduction to CAI and some its distinctive features,this paper minutely arrives at the principles of the application of CAI in high schools and analyses the implication brought about by its application.This research is to provide a further help for English teachers in high shools,so that the students can effectively improve the level of English language learning.
基金Supported by Provincial College Students'Innovation and Entrepreneurship Training Program Project of Education Department of Sichuan Province in 2021"A Method of Memorizing Foreign Languages Faster Based on Solving Students'Foreign Language Learning Problems"(S202114389129).
文摘With the deepening of curriculum reform in junior high school,the education field is undergoing tremendous changes.Besides,with the rapid development of the Internet today,students have been exposed to various new media software since childhood.The existing education and teaching are also desperately keeping up with the pace of the times,and continue to bring online teaching to the practical classrooms of rural middle schools through new media.Teachers should not only impart basic professional knowledge to students,but also improve students'ability to use English.
文摘On the basis of analyzing the present conditions of country high school English teaching, this paper attempts to justify the feasibility of Cognitive Approach’s application to the country high school English teaching and discusses its operation in detail.
基金Research Project on Degree and Postgraduate Education and Teaching Reform of Jiangxi Normal University(YJG201804).
文摘Teaching evaluation is an indispensable part of the teaching system of junior high school.In order to inherit the excellent traditional Chinese culture and arts,traditional Chinese painting has been paid more and more attention to in the fine arts curriculum of rural junior high school.This paper takes the classroom teaching evaluation of traditional Chinese painting as a form of fine arts in rural junior high school as the research object,and analyzes the problems existing in the classroom teaching evaluation of traditional Chinese painting in rural junior high school.This paper puts forward the corresponding improvement measures from the aspects of comprehensive evaluation object,concrete evaluation content,flexible evaluation language and diversified evaluation subjects,in order to improve the evaluation level of fine arts teachers'classroom teaching,improve students'aesthetic cognition and learning interest in traditional Chinese painting,and cultivate students'innovative thinking and spirit.
文摘There have been some problems in both vocabulary teaching for teachers and vocabulary learning for students.In light of the new curriculum,this paper summarizes specific presenting methods,memory strategies and ways to revise and consolidate in vocabulary teaching,which may help senior high school teachers in vocabulary teaching.
文摘Nowadays, flipped classroom has had much recent in higher education, including all kinds of subjects, but a little coverage in high school, especially in English teaching in high school. Therefore, the main purpose of this paper is to analyze the foundational English education workers find a good way to meet the demands of paradigm shift and teaching reform.
文摘The English curriculum standard of ordinary high school(experiment)(the"standard"for short)has maken a hierarchical description of the reading skills,which has put forward higher requirements for the reading teaching.There are many drawbacks in the current English reading teaching,such as:the outdated teaching philosophy and methods,the changeless teaching models and the old reading materials,the disregardful of students’non-linguistic factors and so on.Therefore,some measures have to be taken to improve high school reading teaching,for example,interdisciplinaring and cultivating students’cultural awareness,broadening students’horizons,focusing on discourse teaching,enhancing students’ability in English thought and expression,reinforcing the training of reading skills,enriching students’means to analyze and solve problems and so on.
文摘Learning a foreign language is not just a process of mastering the language skills, but also a process of understanding another culture. Thus, by analyzing the relationship between language and culture and the current problems in high school English teaching, it introduces several strategies of cultivating students' intercultural awareness in English teaching, so that students can learn English better and communicate with foreigners decently.
文摘In senior high schools, great importance and attention are required to be attached to grammar teaching and learning. However, a majority of teachers either apply the traditional method or neglect grammar teaching and learning, both of which go against the ideas of the new curriculum of the high school. To solve the problem, based on the constructionist theory, Halliday's theory of register, and the trial-discovery model, the trial-discovery English grammar teaching model was constructed. To find out whether this teaching model is more effective than the traditional grammar teaching, an experimental study of the trial-discovery model in senior English grammar teaching is carried out. This study deals with the problem how we can improve the efficiency of grammar teaching, that is by increasing the students' learning interest and improving the accuracy in English writing. After the analysis of qualitative and quantitative data collected through questionnaires, interviews, and writing tests, the study reveals that the trial-discovery grammar teaching is more effective to stimulate the students' interest in learning grammar, and is more helpful to improve the accuracy and complexity in English writing than the traditional grammar teaching