The kit-build method worked in classrooms. Making it work across a network took a real-time layer.

Kit-build concept mapping asks learners to rebuild a teacher's concept map from its pieces. It has a good track record. Learners who do it tend to understand the material better and remember it longer than learners who map freely or study in the usual way.

Group work on top of that has done well too. Pairs and small groups using kit-build have outperformed conventional collaborative learning in earlier studies. The problem here was practical rather than pedagogical. The kit-build system was built for a room, not a network. Learners in different places could not work on the same map at the same time.
The paper describes the design and development of an online collaborative platform for kit-build concept mapping. A prototype was built and then evaluated to see whether it had legs for real classroom use, including use at a distance.

The evaluation pointed to the middleware choice as the effective part. Socket.IO gave the platform collaborative features without forcing a rebuild of the kit-build assessment machinery underneath. That matters, because automatic diagnosis is the reason kit-build is worth using in the first place.
The authors describe the result as preliminary. The system showed enough potential to justify real use in distant collaborative learning, which is a modest claim to make for a prototype. The obvious next step is classroom trials that measure learning, not just whether the system runs.

Pinandito et al. (2021). Design and Development of Online Collaborative Learning Platform of Kit-Build Concept Map. Journal of Information Technology and Computer Science.