Abstract：Abstract: Peer scaffolding in eco-class makes affordances cycle virtuously, helping the learners constantly surpass their existing pragmatic competence. Based on eco-class affordance theory and the cycling law with its three elements -- perception, interpretation and action, together with the peer scaffolding as the tool, we carried out a pedagogical experiments in News English class, aiming to examine the effects on the quality of academic project-based oral presentation (APBOP). The result revealed that the oral reports quality was effectively improved through peer-scaffolding learning. Thus the hypothesis is confirmed: Eco-class constructed with peer scaffolding is able to improve the quality of oral output.
Key words: eco- class; peer scaffolding; affordances; APBOP (academic project-based oral presentation)
