Not only does the multi-media technology in teaching help students arouse curiosity and draw their attention,but also it makes students enhance their language skills and master knowledge.It makes English teaching smooth.
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
In English teachinig,the use of multi-media makes a vivid learning atmosphere for students.It can get a better teaching effect in all-around education.Meanwhile,thereare some problems inevitably in this field,leaving ...In English teachinig,the use of multi-media makes a vivid learning atmosphere for students.It can get a better teaching effect in all-around education.Meanwhile,thereare some problems inevitably in this field,leaving for the English teachers to solve.展开更多
With the development of society and economy,more and more talents capable persons are badly needed in the world.Under the influence of traditional English teaching mode,most English learners can only read and write.Th...With the development of society and economy,more and more talents capable persons are badly needed in the world.Under the influence of traditional English teaching mode,most English learners can only read and write.They are usually called "deaf-mutes".Therefore,traditional English teaching mode isn't satisfied by the teachers and received greatly challenged.Due to applying multimedia to English teaching could create more authentic language environment for the learners,which enables them to communicate in English in real-life situations.At present,the multi-media approach is the most popular language teaching method in the world.The most effective way to develop the teaching is combine multimedia with the traditional methods.This is of special significance to English teaching and make the English teaching receiving the best effect.展开更多
Many people believe that during Mandarin teaching activities, teachers should understand the students' mother tongue, or at least be able to carry out the conversation with students via a kind of media language un...Many people believe that during Mandarin teaching activities, teachers should understand the students' mother tongue, or at least be able to carry out the conversation with students via a kind of media language understood by students. In my opinion, however, this is not a requirement for the classroom teaching of mandarin as a second language. Without using the media language but only using Mandarin as the LOGO, one can also gain good teaching results.展开更多
By analyzing the dilemma encountered in practical teaching of new media advertising course in the digital economy era, this paper explores the teaching path of new media advertising course based on “three-dimensional...By analyzing the dilemma encountered in practical teaching of new media advertising course in the digital economy era, this paper explores the teaching path of new media advertising course based on “three-dimensional” practical teaching system, and believes that it is necessary to accurately determine talent training objectives, and construct the three dimensions of practical teaching, practical ability, and new media entrepreneurship and employment. Finally, the teaching countermeasures of practical teaching system based on three dimensions are put forward.展开更多
The cultivation of innovative and entrepreneurial capability is a quality requirement of the times for the training of college and university talents. However, the regular teaching system universally has such problems...The cultivation of innovative and entrepreneurial capability is a quality requirement of the times for the training of college and university talents. However, the regular teaching system universally has such problems as much more emphasis on theory than on practice, much more emphasis on inheritance than on innovation, and mismatching between talent training and market demand, so that a great number of graduates do not have enough innovative capacity, and it is very difficult for them to engage in related jobs of software engineering steadily and permanently. By investigating and analyzing similar majors of more than 20 schools at home and abroad, this article proposes a teaching system of talent training of the 3 C-cored major of "innovative and entrepreneurial" software engineering(digital media technology) based on regions, oriented to the industry and marked by school-enterprise linkage, and in connection with the characteristics of college and university education.展开更多
With the rapid development of the internet,smart classroom has become the research interest of modern-day educational informatization.With Tiktok,WeChat,QQ,and other new media,the intelligent teaching model of"ne...With the rapid development of the internet,smart classroom has become the research interest of modern-day educational informatization.With Tiktok,WeChat,QQ,and other new media,the intelligent teaching model of"new media+education" has been derived.The research subject in this study is the economic and management xmdergraduate course,Principles of Economics.In regard to that,it is expounded based on the new media and an intelligent teaching model is designed in line with the development of colleges and universities in the new era to change the plight of the traditional classroom teaching model,stimulate learners'enthusiasm and interest in learning,as well as improve the teaching effect.展开更多
There is a desideratum in the research about the interdependencies of inclusive education and media education. Digital media can facilitate individualized and cooperative learning. Additionally, digital media can be u...There is a desideratum in the research about the interdependencies of inclusive education and media education. Digital media can facilitate individualized and cooperative learning. Additionally, digital media can be used to promote inclusion. However, which factors influence the acquisition of media and information literacy in inclusive education? Comparative international studies, e.g., the International Computer and Information Literacy Study (ICILS), show how social challenges, such as participation and handling heterogeneity at school, can be addressed through media. In numerous studies, it becomes apparent that German teachers do not sufficiently see the potential of digital media, especially for the improvement of learning opportunities for individuals with diverse learning requirements. German teachers are not well able to apply digital media appropriately in their lessons. Teachers need to be qualified and to design modern education with accessible media. In Germany, the ratio between available computers and pupils (1:4) is far better than the rate between teaching with and without computers. According to the teacher’s reports, only 9% of teachers are using digital media daily. Approximately 40% use digital media seldom or never. It seems that the cause is a skeptical attitude towards media among teachers, especially in humanities. That may result from missing didactical competences regarding digital media. The idea of Technical Pedagogical Content Knowledge (TPACK) and extending that explanatory model for teachers’ competencies on the inclusive practices builds the theoretical background for the design of joint seminars by the Research Center Youth-Media-Education as part of the Faculty for Cultural Studies and the Research Cluster Technology for Inclusion and Participation at the University of Dortmund. Prospective teachers should become familiar with this way of collaboration. Already for four years now, a teaching team from these two departments designs collaborative lectures. Inclusive teaching and learning in different contexts are practiced in tutorials with practical approaches as well. In tandems, the students develop a learning situation at school or extracurricular institutions. Afterward, they present it. The presentation focuses on the concept, its teaching and learning conditions, and competence orientation as well as opportunities and limitations.展开更多
The development history of education is actually a history of the change of media technology.From the perspective of historical development,different periods of media technology have different forms of education.As th...The development history of education is actually a history of the change of media technology.From the perspective of historical development,different periods of media technology have different forms of education.As the two core elements of education,curriculum and teaching are also deeply influenced by the development of media technology.With the continuous emergence of new media,especially in the context of artificial intelligence,the curriculum has experienced the change from attaching importance to subject knowledge to the cultivation of students’innovation ability and core literacy;from static,paper-based,single to dynamic,online and network-based curriculum form;from fixed,unified,limited to personalized,unlimited and open curriculum change is tolerated.Teaching has also experienced two major changes:the optimization of teaching forms and the adjustment of teaching subject role.In order to actively cater to the development of the future science and technology society,the future curriculum and teaching should focus on sustainable development education;focus on the cultivation of key abilities in the 21st century;focus on improving the“three scientific and technological literacy”education;and strengthen the humanistic care of curriculum and teaching.展开更多
In new media era,the network coverage is wider,application of mobile terminals is more convenient,speed of information dissemination is fully accelerated,scope of dissemination is wider and people's access to info...In new media era,the network coverage is wider,application of mobile terminals is more convenient,speed of information dissemination is fully accelerated,scope of dissemination is wider and people's access to information is more diversified.Therefore,the current media has become an indispensable part of human’s lives such as changing the way human live,work,learn and communicate daily.In this context,it is compulsory to improve the traditional teaching methods in order to keep in pace with the fast development and promote art education through the combination of technology and art.This paper analyses the current situation of digital media art teaching and the construction path of teaching model in the new media era.展开更多
Electrodynamics,as one of the four major mechanics,is a required course for college students majoring in physics.It reveals the laws and essence of physical phenomena more profoundly,so it is more difficult and the cu...Electrodynamics,as one of the four major mechanics,is a required course for college students majoring in physics.It reveals the laws and essence of physical phenomena more profoundly,so it is more difficult and the current teaching situation is not optimistic.Based on the structure and characteristics of electrodynamics,this paper studies the teaching and reform of electrodynamics from multiple dimensions,in order to achieve teaching innovation according to the requirements of the new curriculum reform and the concept of modern talent training,and provide students with higher quality teaching services.展开更多
In the development of modern society,many advanced technologies have been applied to the development of various industries,[3]and the application of new media technology has made great changes in the work and study of...In the development of modern society,many advanced technologies have been applied to the development of various industries,[3]and the application of new media technology has made great changes in the work and study of the people.In the new media environment,[1]English teaching in colleges and universities has improved the traditional teaching mode,made the teaching idea get some innovation,and introduced many innovative teaching methods,which stimulated the students’enthusiasm for learning[1].Based on this,this paper expounds the importance of[8]the reform and innovation of English teaching in colleges and universities under the new media environment[4],analyzes the present situation of English teaching in colleges and universities[2],and studies the optimization measures for the reform and innovation of English teaching in colleges and universities under the new media environment.展开更多
With the continuous development of science and technology and the comprehensive arrival of the information era, new media has gradually emerged and developed, which has had a serious impact on the original media form....With the continuous development of science and technology and the comprehensive arrival of the information era, new media has gradually emerged and developed, which has had a serious impact on the original media form. Under the background of new media, higher requirements are put forward for the education and teaching activities of broadcasting and hosting specialty in colleges and universities, and the combination of new media technology and Chinese educational practice is the general trend in the current education field, which can effectively improve students’ learning quality and learning effects, and provide a broader space for the development of new media professions. This paper mainly explores the teaching strategies of broadcasting and hosting specialty in colleges and universities from the perspective of new media.展开更多
This paper investigates the promotion of rich media techniques and creation of teaching resources in Chinese language education curriculums. Infusing rich media technology with teaching practice, teachers should not o...This paper investigates the promotion of rich media techniques and creation of teaching resources in Chinese language education curriculums. Infusing rich media technology with teaching practice, teachers should not only introduce original thinking, new skills and authentic knowledge to students, but also should emphasize on creativity. In this sense, the resources created within the curriculums are possible to develop and in turn, accumulate more teaching resources and materials for Chinese language education.展开更多
Under the background of current social development,the role of media in the process of information dissemination is becoming more and more enlarged,the speed of information dissemination is greatly accelerated based o...Under the background of current social development,the role of media in the process of information dissemination is becoming more and more enlarged,the speed of information dissemination is greatly accelerated based on the platform built by the media.In the process of information dissemination,the related concepts of new media are derived based on the media platform.This is also the result of the continuous integration of information technology and network technology.Compared with the traditional media,the advantages of new media technology itself are more obvious both the source of information,but also the reporter and audience,so in the context of the development of new media art,the spread of various social hot issues is very fast,and the coverage is also wider.Under the background of the development of new media,colleges and universities themselves are greatly impacted by the information of new media,because people have higher acceptance of new media,so they receive all kinds of information from the outside world through mobile phones and computers,which leads to the challenge of education and teaching management in colleges and universities at present.展开更多
Huge development and rapid evolution has set new trend of language use and language study. Younger generations keen on popular media culture in daily life as well as language study. Language teachers keep up with the ...Huge development and rapid evolution has set new trend of language use and language study. Younger generations keen on popular media culture in daily life as well as language study. Language teachers keep up with the development to explore how to use popular media culture in classroom teaching. Comparing a dispute question of whether putting media culture in language education or not and then illustrating some relevant literatures of application of new media education to explain the necessity and tendency of this new education style. Recent researches find the links between popular culture and encouragement of young learners' motivation of English study. There are plenty of popular media culture materials while numerous teachers prefer to use video clips of animation or popular TV drama as a specific popular culture in English teaching especially to vocational college students.展开更多
English Language teaching involves various English teaching techniques in terms of listening,speaking,reading,writ ing and the like skills.Traditional teaching ways are mostly discussed from that standpoint.Here,some ...English Language teaching involves various English teaching techniques in terms of listening,speaking,reading,writ ing and the like skills.Traditional teaching ways are mostly discussed from that standpoint.Here,some new English classroom teaching techniques are introduced and evaluated in a dimensional perspective,which relate to such elements as the students,the teacher,classroom organization and management,and instructional strategies,etc.It makes English classroom teaching more effec tive,thus improve English classroom teaching results.So,it’s advisable for English teachers to reconsider and reevaluate their teaching strategy and result in language classroom from a new multi-dimensional angle in order to improve English teaching effi ciency.展开更多
Taking the teaching practice of agricultural landscape planning for example,this paper uses the multi-modal teaching idea for teaching design based on traditional lecture-style teaching,including multi-modal teaching ...Taking the teaching practice of agricultural landscape planning for example,this paper uses the multi-modal teaching idea for teaching design based on traditional lecture-style teaching,including multi-modal teaching materials,multi-modal teaching methods and multi-modal teaching evaluation. The results show that this method can effectively improve students' interest in learning,reinforce the theoretical basis of agricultural landscape planning theory,and improve agricultural landscape planning practical skills. It is the active exploration of multi-modal teaching model and useful complement to traditional classroom teaching.展开更多
Based on the teaching video of middle school English teachers, through observation and analysis, it puts forward the problem of less use, wrong use and abuse in the use of teachers' teaching gestures in middle sch...Based on the teaching video of middle school English teachers, through observation and analysis, it puts forward the problem of less use, wrong use and abuse in the use of teachers' teaching gestures in middle school English teaching. And then it puts forward corresponding solutions from three aspects: concept, theory and practice. Hoping to provide further reference to the complementary role of teaching gesture and teaching discourse.展开更多
文摘Not only does the multi-media technology in teaching help students arouse curiosity and draw their attention,but also it makes students enhance their language skills and master knowledge.It makes English teaching smooth.
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In English teachinig,the use of multi-media makes a vivid learning atmosphere for students.It can get a better teaching effect in all-around education.Meanwhile,thereare some problems inevitably in this field,leaving for the English teachers to solve.
文摘With the development of society and economy,more and more talents capable persons are badly needed in the world.Under the influence of traditional English teaching mode,most English learners can only read and write.They are usually called "deaf-mutes".Therefore,traditional English teaching mode isn't satisfied by the teachers and received greatly challenged.Due to applying multimedia to English teaching could create more authentic language environment for the learners,which enables them to communicate in English in real-life situations.At present,the multi-media approach is the most popular language teaching method in the world.The most effective way to develop the teaching is combine multimedia with the traditional methods.This is of special significance to English teaching and make the English teaching receiving the best effect.
文摘Many people believe that during Mandarin teaching activities, teachers should understand the students' mother tongue, or at least be able to carry out the conversation with students via a kind of media language understood by students. In my opinion, however, this is not a requirement for the classroom teaching of mandarin as a second language. Without using the media language but only using Mandarin as the LOGO, one can also gain good teaching results.
基金Sponsored by 2022 “Tourism Industry Economic Teaching Innovation Team” of Taishan University。
文摘By analyzing the dilemma encountered in practical teaching of new media advertising course in the digital economy era, this paper explores the teaching path of new media advertising course based on “three-dimensional” practical teaching system, and believes that it is necessary to accurately determine talent training objectives, and construct the three dimensions of practical teaching, practical ability, and new media entrepreneurship and employment. Finally, the teaching countermeasures of practical teaching system based on three dimensions are put forward.
基金supported by Research and Practice on the reform of graduate education and teaching in Jiangsu Province in 2016(JGZZ16_065)
文摘The cultivation of innovative and entrepreneurial capability is a quality requirement of the times for the training of college and university talents. However, the regular teaching system universally has such problems as much more emphasis on theory than on practice, much more emphasis on inheritance than on innovation, and mismatching between talent training and market demand, so that a great number of graduates do not have enough innovative capacity, and it is very difficult for them to engage in related jobs of software engineering steadily and permanently. By investigating and analyzing similar majors of more than 20 schools at home and abroad, this article proposes a teaching system of talent training of the 3 C-cored major of "innovative and entrepreneurial" software engineering(digital media technology) based on regions, oriented to the industry and marked by school-enterprise linkage, and in connection with the characteristics of college and university education.
文摘With the rapid development of the internet,smart classroom has become the research interest of modern-day educational informatization.With Tiktok,WeChat,QQ,and other new media,the intelligent teaching model of"new media+education" has been derived.The research subject in this study is the economic and management xmdergraduate course,Principles of Economics.In regard to that,it is expounded based on the new media and an intelligent teaching model is designed in line with the development of colleges and universities in the new era to change the plight of the traditional classroom teaching model,stimulate learners'enthusiasm and interest in learning,as well as improve the teaching effect.
文摘There is a desideratum in the research about the interdependencies of inclusive education and media education. Digital media can facilitate individualized and cooperative learning. Additionally, digital media can be used to promote inclusion. However, which factors influence the acquisition of media and information literacy in inclusive education? Comparative international studies, e.g., the International Computer and Information Literacy Study (ICILS), show how social challenges, such as participation and handling heterogeneity at school, can be addressed through media. In numerous studies, it becomes apparent that German teachers do not sufficiently see the potential of digital media, especially for the improvement of learning opportunities for individuals with diverse learning requirements. German teachers are not well able to apply digital media appropriately in their lessons. Teachers need to be qualified and to design modern education with accessible media. In Germany, the ratio between available computers and pupils (1:4) is far better than the rate between teaching with and without computers. According to the teacher’s reports, only 9% of teachers are using digital media daily. Approximately 40% use digital media seldom or never. It seems that the cause is a skeptical attitude towards media among teachers, especially in humanities. That may result from missing didactical competences regarding digital media. The idea of Technical Pedagogical Content Knowledge (TPACK) and extending that explanatory model for teachers’ competencies on the inclusive practices builds the theoretical background for the design of joint seminars by the Research Center Youth-Media-Education as part of the Faculty for Cultural Studies and the Research Cluster Technology for Inclusion and Participation at the University of Dortmund. Prospective teachers should become familiar with this way of collaboration. Already for four years now, a teaching team from these two departments designs collaborative lectures. Inclusive teaching and learning in different contexts are practiced in tutorials with practical approaches as well. In tandems, the students develop a learning situation at school or extracurricular institutions. Afterward, they present it. The presentation focuses on the concept, its teaching and learning conditions, and competence orientation as well as opportunities and limitations.
基金This research was funded by the Chongqing Social Science Planning Project(2019BS084)in 2019.
文摘The development history of education is actually a history of the change of media technology.From the perspective of historical development,different periods of media technology have different forms of education.As the two core elements of education,curriculum and teaching are also deeply influenced by the development of media technology.With the continuous emergence of new media,especially in the context of artificial intelligence,the curriculum has experienced the change from attaching importance to subject knowledge to the cultivation of students’innovation ability and core literacy;from static,paper-based,single to dynamic,online and network-based curriculum form;from fixed,unified,limited to personalized,unlimited and open curriculum change is tolerated.Teaching has also experienced two major changes:the optimization of teaching forms and the adjustment of teaching subject role.In order to actively cater to the development of the future science and technology society,the future curriculum and teaching should focus on sustainable development education;focus on the cultivation of key abilities in the 21st century;focus on improving the“three scientific and technological literacy”education;and strengthen the humanistic care of curriculum and teaching.
文摘In new media era,the network coverage is wider,application of mobile terminals is more convenient,speed of information dissemination is fully accelerated,scope of dissemination is wider and people's access to information is more diversified.Therefore,the current media has become an indispensable part of human’s lives such as changing the way human live,work,learn and communicate daily.In this context,it is compulsory to improve the traditional teaching methods in order to keep in pace with the fast development and promote art education through the combination of technology and art.This paper analyses the current situation of digital media art teaching and the construction path of teaching model in the new media era.
文摘Electrodynamics,as one of the four major mechanics,is a required course for college students majoring in physics.It reveals the laws and essence of physical phenomena more profoundly,so it is more difficult and the current teaching situation is not optimistic.Based on the structure and characteristics of electrodynamics,this paper studies the teaching and reform of electrodynamics from multiple dimensions,in order to achieve teaching innovation according to the requirements of the new curriculum reform and the concept of modern talent training,and provide students with higher quality teaching services.
文摘In the development of modern society,many advanced technologies have been applied to the development of various industries,[3]and the application of new media technology has made great changes in the work and study of the people.In the new media environment,[1]English teaching in colleges and universities has improved the traditional teaching mode,made the teaching idea get some innovation,and introduced many innovative teaching methods,which stimulated the students’enthusiasm for learning[1].Based on this,this paper expounds the importance of[8]the reform and innovation of English teaching in colleges and universities under the new media environment[4],analyzes the present situation of English teaching in colleges and universities[2],and studies the optimization measures for the reform and innovation of English teaching in colleges and universities under the new media environment.
文摘With the continuous development of science and technology and the comprehensive arrival of the information era, new media has gradually emerged and developed, which has had a serious impact on the original media form. Under the background of new media, higher requirements are put forward for the education and teaching activities of broadcasting and hosting specialty in colleges and universities, and the combination of new media technology and Chinese educational practice is the general trend in the current education field, which can effectively improve students’ learning quality and learning effects, and provide a broader space for the development of new media professions. This paper mainly explores the teaching strategies of broadcasting and hosting specialty in colleges and universities from the perspective of new media.
文摘This paper investigates the promotion of rich media techniques and creation of teaching resources in Chinese language education curriculums. Infusing rich media technology with teaching practice, teachers should not only introduce original thinking, new skills and authentic knowledge to students, but also should emphasize on creativity. In this sense, the resources created within the curriculums are possible to develop and in turn, accumulate more teaching resources and materials for Chinese language education.
文摘Under the background of current social development,the role of media in the process of information dissemination is becoming more and more enlarged,the speed of information dissemination is greatly accelerated based on the platform built by the media.In the process of information dissemination,the related concepts of new media are derived based on the media platform.This is also the result of the continuous integration of information technology and network technology.Compared with the traditional media,the advantages of new media technology itself are more obvious both the source of information,but also the reporter and audience,so in the context of the development of new media art,the spread of various social hot issues is very fast,and the coverage is also wider.Under the background of the development of new media,colleges and universities themselves are greatly impacted by the information of new media,because people have higher acceptance of new media,so they receive all kinds of information from the outside world through mobile phones and computers,which leads to the challenge of education and teaching management in colleges and universities at present.
文摘Huge development and rapid evolution has set new trend of language use and language study. Younger generations keen on popular media culture in daily life as well as language study. Language teachers keep up with the development to explore how to use popular media culture in classroom teaching. Comparing a dispute question of whether putting media culture in language education or not and then illustrating some relevant literatures of application of new media education to explain the necessity and tendency of this new education style. Recent researches find the links between popular culture and encouragement of young learners' motivation of English study. There are plenty of popular media culture materials while numerous teachers prefer to use video clips of animation or popular TV drama as a specific popular culture in English teaching especially to vocational college students.
文摘English Language teaching involves various English teaching techniques in terms of listening,speaking,reading,writ ing and the like skills.Traditional teaching ways are mostly discussed from that standpoint.Here,some new English classroom teaching techniques are introduced and evaluated in a dimensional perspective,which relate to such elements as the students,the teacher,classroom organization and management,and instructional strategies,etc.It makes English classroom teaching more effec tive,thus improve English classroom teaching results.So,it’s advisable for English teachers to reconsider and reevaluate their teaching strategy and result in language classroom from a new multi-dimensional angle in order to improve English teaching effi ciency.
基金Supported by Education and Teaching Reform and Research Project of Xi'an University of Science and Technology(JG14110)Cultivation Fund of Xi'an University of Science and Technology(201640)Science and Technology Innovation Team Fund of College of Architecture and Civil Engineering(17JGCXTD004)
文摘Taking the teaching practice of agricultural landscape planning for example,this paper uses the multi-modal teaching idea for teaching design based on traditional lecture-style teaching,including multi-modal teaching materials,multi-modal teaching methods and multi-modal teaching evaluation. The results show that this method can effectively improve students' interest in learning,reinforce the theoretical basis of agricultural landscape planning theory,and improve agricultural landscape planning practical skills. It is the active exploration of multi-modal teaching model and useful complement to traditional classroom teaching.
文摘Based on the teaching video of middle school English teachers, through observation and analysis, it puts forward the problem of less use, wrong use and abuse in the use of teachers' teaching gestures in middle school English teaching. And then it puts forward corresponding solutions from three aspects: concept, theory and practice. Hoping to provide further reference to the complementary role of teaching gesture and teaching discourse.