- Specularity in Algebra
- Experiencing Equivalence, but Organizing Order
- Examples, A Missing Link
- Moore and Less!
PME29 was written when I was a PhD student. I believe, it was one of the first papers that used phenomenography for studying people’s understanding of an advanced mathematics concept. Perhaps that is why it’s been cited more than my other papers; okay, I try to ignore this fact that the paper was co-written by David Tall 🙂