Jerry is a dedicated mathematics educator that believes learning is a communal activity that needs scaffolding in the form of those before us (those who know) through innovative use of learning technologies. This outlook informs his approach in modeling some skills as he deliberately mention them just-in-time, where appropriate.
Maseko, J., Luneta, K. & Long, C. (2019.) Towards Validation of a rational number instrument: an application of Rasch measurement theory. Pythagoras, 40(1) 1-12.