When formative assessment involves a large number of learners, Technology-Enhanced Formative Assessments are one of the most popular solutions. However, current TEFA processes lack data-informed decision-making. By analyzing a dataset gathered from a formative assessment tool, we provide evidence about how to improve decision-making in processes that ask learners to answer the same question before and after a confrontation with peers. Our results suggest that learners' understanding increases when the proportion of correct answers before the confrontation is close to 50%, or when learners consistently rate peers' rationales. Furthermore, peer ratings are more consistent when learners' confidence degrees are consistent. These results led us to design a decision-making model whose benefits will be studied in future works.

Our previous work has introduced the "Tsaap-Notes" platform to increase the motivation and engagement of students in the process of collaborative note taking during lectures. In this paper, we introduce the approach "Notes as Feedback" which consists of recycling interactive questions asked during a lecture in order to semi-automatically build computer based self-assessment tests where feedback provided to students is based on the notes taken by students. A first experimentation on a group of 54 students enrolled in a computer science Master course helped to highlight the benefits of this work: increased participation in note-taking, a massive engagement of students to play the self-assessment tests, and improved student results at the final exam.

Social theories of learning demonstrated that collaborative note taking during face-to-face lecture provides important benefits: better learner engagement, collaborative learning, and knowledge building. In this paper we present Tsaap-Notes, an open micro-blogging platform dedicated to collaborative note taking that can be used as a standalone application, or fully integrated into existing virtual learning environments. Tsaap-Notes provides users with advanced features such as annotations, questions, or filtering that encourage learners to participate in the collaborative activity. Our tool has been experimented with a cohort of forty students during a short period of time, results show that learners are getting more and more familiar with Tsaap-Notes and that this application becomes useful when the time of preparing exams has come.