“支架式教学”这一概念由布鲁纳（J. S. Bruner）于1976年首次提出。“支架”（scaffold）原意是建筑行业中的“脚手架”，在这里描述的是教师的“教”。通过教师搭建的“脚手架”，学生可以积极主动思考，完成学习任务，进而培养自主学习能力，建构知识体系。在这种师生间协作交流的教学情境下，学生的学习潜能得到更好地开发，实现了“教”与“学”的完美结合。


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The concept of scaffolding has its origins in the work of the psychologist Vygotsky as well as in studies of early language learning. Bruner (1978) believed that for learning to take place, appropriate social interactional frameworks must be provided. In the case of the young child learning language, the instructional component consists of the caregiver (normally the mother) providing a framework to allow the child to learn. To do this, the caregiver should always be one step ahead of the child (Vygotsky's zone of proximal development), and by using contexts that are extremely familiar and routinized the caregiver can facilitate the child's learning. These highly predictable routines, such as reading books together or conversations at bath time or meals, offer the caregiver and child a structure within which the caregiver can continually raise her expectations of the child's performance. For Bruner, this meant specifically the child's linguistic performance, because, he argued, it is within these formats that children learn how to use language.


Cazden (1983) adopted Bruner's use of the term scaffolding, but distinguished between vertical and sequential scaffolding.Vertical scaffolding involves the adult extending the child's language by asking further questions. So in response to the child's utterance 'cow', she might say 'Yes, that's a cow. What does the cow say?', or she might ask for an elaboration 'And what did we see when we went to the farm today? 'Whereas sequential scaffolding is the scaffolding found in the games played with children at meals, bath times, and so on.


Applebee and Langer (1983) used the notion of instructional scaffolding as a way to describe essential aspects of formal instruction. In their view, learning is a process of gradual internalization of routines and procedures available to the learner from the social and cultural context in which the learning takes place. In instructional scaffolding the language learner is assisted in a new task by a more skilled language user who models the language task to be used verbally and/or in writing. As well as through modelling, scaffolding is provided by leading or probing questions to extend or elaborate the knowledge the learner already possesses. Rather than evaluating the learner's answers, the teacher is supporting, encouraging, and providing additional props. As the learner's competence grows, so the scaffolding is gradually reduced until the learner is able to function autonomously in that task and generalize to similar circumstances.


There are five criteria for effective scaffolding (Applebee 1986):

1. Student ownership of the learning event.The instructional task must allow students to make their own contribution to the activity as it evolves.

2. Appropriateness of the instructional task. This means that the tasks should build upon the knowledge and skills the student already possesses, but should be difficult enough to allow new learning to occur.

3. A structured learning environment. This will provide a natural sequence of thought and language, thus presenting the student with useful strategies and approaches to the task.

4.Shared responsibility. Tasks are solved jointly in the course of instructional interaction, so the role of the teacher is more collaborative than evaluative.

5. Transfer of control. As students internalize new procedures and routines, they should take a greater responsibility for controlling the progress of the task such that the amount of interaction may actually increase as the student becomes more competent.  

For Applebee, one of the most appealing features of these principles is that they provide a new way to think about familiar teaching routines, rather than a wholesale abandonment of the past.


Further reading

Applebee, A. N. 1986. 'Problems in process approaches: Towards a reconceptualization of process instruction' in A. R. Petrosky and D. Bartholomae (eds.) The Teaching of Writing. 85th Yearbook of the National Society for the Study of Education. Chicago: University of Chicago Press.

Applebee, A. N. and J. A. Langer, 1983.'Instructional scaffolding: Reading and writing as natural language activities.Language Arts, 60/2.

Bruner, J. 1978. 'The role of dialogue in language acquisition' In A. Sinclair, R. J. Jarvelle, and W. J. M. Levelt(eds.) The Child's Concept of Language. New York: Springer-Verlag.

Cazden, C. 1983. 'Adult assistance to language development: scaffolds, models and direct instruction' in R. P. Parkerand and F. A. Davies (eds.) Developing Literacy. Delaware: International Reading Association.

Hatch, E. 1978. 'Discourse analysis and second language acquisition' in E. Hatch (ed.) Second Language Acquisition: A Book of Reading. Rowley, Mass.: Newbury House.

Long, M. and Sato, C. 1984. 'Methodological issues in interlanguage studies: an interactionist perspective' in A. Davies,C. Criper and A. Howatt (eds.) Interlanguage. Edinburgh: Edinburgh University Press.

Sato, C. 1986. 'Conservation and interlanguage development: Rethinking the connection' in R. Day (ed.) Talking to Learn: Conversation in Second Language Acquisition. Rowley, Mass.: Newbury House.

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