If you eventually reconsider the decision to not teach OO concepts, I recommend Pharo as a awesome language, including for teaching OOP as it was meant to be. I

If you eventually reconsider the decision to not teach OO concepts, I recommend Pharo as a awesome language, including for teaching OOP as it was meant to be. It has firm roots on Smalltalk, very easy to install, with a superb IDE and proven track record on children education. There's a MOOC on https://mooc.pharo.org/ https://mooc.pharo.org/ See also https://news.ycombinator.com/item?id=27368962 https://news.ycombinator.com/item?id=27368962 For a example of a nice educational project done with it, see https://news.ycombinator.com/item?id=30562009 https://news.ycombinator.com/item?id=30562009