Digital assessment in mathematics beyond multiple choices

Many colleagues who teach Pure and Applied Mathematics and Theoretical Physics, have long been concerned with numerous elementary mistakes in differentiation, integration and simple algebra made by third and even fourth-year (crème de la crème MSci) students. We blamed slipping A-level standards, lack of understanding on part of the students, and the system where students could make mistakes in almost every other line of their exam scripts, and yet score 50% while not getting any final answers correct! We grumbled and complained to each other at examiners’ meetings, introduced some remedial lectures in our first year modules, provided re-cap material at higher levels, but to no avail.