Interesting thing i have noticed. I have completed the whole Duolingo German course and also doing A2 course on dw.com but I am now starting to see that I really haven't learned past for example
sit - sat
sitzen - saßen
I have always used Indikativ Perfekt in these situations for example I would say Ich habe bei der Tisch gesessen which should be a correct sentence in the past.
Is the indikativ präteritum for something else then?