Despite a great number of studies exploring Schmidt’s noticing hypothesis in the cognitive perspective of language learning, the investigations focused on noticing in the ecological perspective are rather rare in number. The present study was an attempt to examine how noticing second language recast could affect the learners’ achievements of grammatical structures through these two perspectives (i.e., cognitive and ecological). To do so, one hundred and twenty first-year college students at Islamic Azad University and Applied Science University in Tehran took part in this study. The students were divided into two cognitive and ecological groups and received two different treatments. During the treatment, the learners in all groups received recast and their noticing was assessed through learners’ raising hands and underlining. In the end, a posttest was conducted to measure the effectiveness of the treatment. Data analysis revealed that the ecological perspective of language learning was more conducive to noticing and subsequent language learning. The study also made contributions by actualizing the ecological project-based meaningful activities, shedding light on the importance of affordance and interaction in the context of language learning.
