Engineering students (not software) learning numerical methods, so doing programming themselves, but nothing very sophisticated. Their programming skills are m

Engineering students (not software) learning numerical methods, so doing programming themselves, but nothing very sophisticated. Their programming skills are mostly pretty limited so simpler is better. At the moment we use plain Jupyter notebooks, but a variable value explorer and simple debugger would be helpful. I want to avoid the (to them) bewildering complexity of an IDE.