I have published twice on MESE-related posts. One was a textbook chapter about MESE 29:
The "water triangle" proportional reasoning task
The publication is:
Dickman, B. (2018). Creativity in Question and Answer Digital Spaces for Mathematics Education: A Case Study of the Water Triangle for Proportional Reasoning. In Creativity and Technology in Mathematics Education (pp. 233-248). Springer. Link (no pay wall).
The other publication corresponds to MESE 907:
Good problems that uncover difficult points in a theory
(For which I had written an earlier, related answer on MathOverflow: MO 60457.)
The publication is:
Dickman, B. (2017). Enriching divisibility: multiple proofs and generalizations. The Mathematics Teacher, 110(6), 416-423. Link (no pay wall).
As I understand matters from a pre-print excerpt, this latter publication will make a noteworthy cameo in a chapter from Joel David Hamkins' forthcoming book, which is mentioned here as Proof and the art of mathematical reasoning.