Hedy is a gradual programming language to teach children programming. Gradual languages use different language levels, where each level adds new concepts and syntactic complexity. At the end of the Hedy level sequence, kids master a subset of syntactically valid Python.
A fun mystery for you front end kinf @fpereiro :D
Here's what happens, I set the front page to English:
And then I click try it, I go to the Dutch version:
This does not happen for any of the other langs....?! My understanding of the website part of the app is too shallow to know what's up here!