The method is older than the software.

I taught German as a foreign language for more than thirteen years, with the Goethe-Institut's DLL certificate, before founding edupango. I have given more than 10,000 one to one lessons, and in nearly all of them people got stuck on the four cases. That is where the colors come from, and I built the software with my team so anyone can use them, not just the people I taught directly.I taught German for more than thirteen years, with the Goethe-Institut's DLL certificate, before founding edupango. In more than 10,000 one to one lessons, nearly everyone got stuck on the four cases. That is where the colors come from, and I built the software so anyone can use them.

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