An Educational Programming Language should not be too far removed from mainstream "Industry" languages. Complexity should not be completely hidden while teachin

An Educational Programming Language should not be too far removed from mainstream "Industry" languages. Complexity should not be completely hidden while teaching/learning Programming but must be gradually unveiled. I believe a multiparadigm language with a small "kernel language" to which you progressively add more layers for different paradigms should be the way to teach. The Mozart/Oz language i think shows the way - https://en.wikipedia.org/wiki/Oz_(programming_language) https://en.wikipedia.org/wiki/Oz_(programming_language)