Is There an Open End in Open Badges? Experiences From a Maker Lab: Educational Action Research on Implementing Constructionist Microcredentials Reveals Productive Tension Between Structure and Openness. constructionism [Internet]. 2025 Jun. 24 [cited 2025 Jun. 30];8:13-26. Available from: https://constructionism.oapublishing.ch/index.php/con/article/view/2