@aoanla The students did great with Julia! For years I've taught statistics courses using R, but we never tried to teach them basic programming techniques (e.g. with loops, conditional evaluation) in those courses. In the new course, I emphasized the goal of programming simulations of interest to the students (e.g. individuals moving and interacting on a landscape; cells growing in a petri dish). A key thing was using Pluto so they built their programs with full annotation. Highly successful!