The instructional technology community is in the midst of a philosophical shift from a behaviorist to a constructivist framework, a move that may begin to address the growing rift between formal school learning and real-life learning. One theory of learning that has the capacity to promote authentic learning is that of situated learning.The purpose of this three part study was firstly, to identify critical characteristics of a situated learning environment from the extensive literature base on the subject; secondly, to operationalise the critical characteristics of a situated learning environment by designing a multimedia program which incorporated the identified characteristics; and thirdly, to investigate students' perceptions of their experiences using an multimedia package based on a situated learning framework.The learning environment comprised a multimedia program for preservice teachers on assessment in mathematics, together with recommended implementation conditions in the classroom. Eight students were observed and interviewed to explore their perceptions of the situated learning environment. Findings suggest that the use of the situated learning framework appeared to provide effective instructional design guidelines for the design of an environment for the acquisition of advanced knowledge.

The use of authentic activities within online learning environments has been shown to have many benefits for learners in online units and courses. There has been renewed interest in the role of student activities within course units, as constructivist philosophy and advances in technology impact on educational design and practice. Courses based on these principles have been used successfully across a wide variety of discipline areas. In spite of the growing evidence of the success of authentic learning environments, they are not without their problems. In this paper we discuss patterns of engagement that have emerged from our own research on authentic learning tasks, in particular, the initial reluctance to willingly immerse in learning scenarios that some students experience, and the need for the suspension of disbelief before engaging in the task. The paper proposes ten characteristics of authentic activities, based on educational theory and research, which have been used as criteria for the selection of existing online units or courses for in depth investigation. The paper includes a short review of the literature, a description of the research and some preliminary findings and identification of issues related to the necessity for students to willingly suspend disbelief in order to fully engage in learning scenarios based on authentic tasks.

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This paper reports on a study that examines the pattern of interaction in child native speaker (NS)-nonnative speaker (NNS) conversation to determine if the NSs provide negative feedback to their NNS conversational partners. It appears that just as children are able to modify their input for their less linguistically proficient conversational partners in first language acquisition (Snow, 1977), so too are children able to modify their interactions for NNS peers in the second language acquisition process and, in doing so, provide negative feedback. Two forms of NS modification were identified in this study as providing reactive and implicit negative feedback to the NNS. These were (a) negotiation strategies, including repetition, clarification requests, and comprehension checks, and (b) recasts. The results indicated that NSs respond differentially to the grammaticality and ambiguity of their NNS peers' conversational contributions. Furthermore, NS responses (negotiate, recast, or ignore) appeared to be triggered by the type and complexity of NNS errors, although it was more likely overall that negative feedback would be used rather than the error ignored. Additionally, evidence suggested that negative feedback was incorporated by the NNSs into their interlanguage systems. This indicates that not only does negative evidence exist for child second language learners in these types of conversations, but that it is also usable and used by them in the language acquisition process. c 1995 Cambridge University Press 0272-2631/95 $7.50 + .10 459 Positive evidence (input/models) Input authentic simplified elaborated grammar rules overt error communication recast correction breakdown simple complex

This study examines whether differences exist in the provision and use of negative feedback, according to the age of the learners and the context of the interaction. The data were collected from 20 classrooms (10 adult and 10 child ESL classes) and 32 NS-NNS dyads (16 adult and 16 child). Transcriptions of these formed the basis of analysis and were coded to reflect three parts of the conversational exchange and the interactional patterns to which these could be assigned. The results showed that learners both received negative feedback in response to their nontargetlike utterances and used this feedback. Further, the findings indicated that the age of the learners and context of the exchanges did indeed affect the pattern of interaction. Negative feedbackAlthough the necessity for input in the process of second language acquisition (SLA) is well accepted, the form that it needs