ABSTRACT
In principle, the goal of this study is to create a collaborative-based model for managing mathematics learning in the Covid-19 pandemic that is efficient at improving learning output. The specific objectives of the research in this article are to describe (1) collaborative-based learning of mathematics during the Covid-19 pandemic era and (2) independent habituation of junior high school students. The type of this study is research and development. It considers a qualitative ethnographic research design. Math teachers, principals, and students from SMP Negeri 1 Colomadu Karanganyar participated as research subjects. The method of data collection was done by conducting observations and field notes, interviews, and documentation. The data analysis technique was done inductively. The results of this study are (1) collaborative-based learning of mathematics during the Covid-19 pandemic era, in the paradigm of "students actively construct meaning - teacher as facilitator, students find concepts - teacher facilitates problem solving". That mindset is a change of reflection and action. The management model is carried out in three stages with five provisions. (2) Making students ready to be independent, requiring teachers to be independent, enabling, and building students' abilities, from before to the time of learning. Independent students were based on a strong religion, core character, lifestyle character, respect for others, and the potential to be intelligent, creative, innovative, and entrepreneurial. © 2022 Author(s).