TRACK is a three-year research project (2022-25) with VIA, Aarhus – and Aalborg universities. We investigate whether parts of Singapore’s way of teaching mathematics can be helpful in a Danish context. The chosen elements are grounded in mathematics problem solving and the structured use of various kinds of representations, for example concrete materials, drawing and symbols. The project includes new textbooks for Danish 4th, 5th, and 6th graders. A total of 1,800 students and their teachers take part in TRACK, which will investigate how Danish teachers can develop their methods in mathematics.