2 rules that are often ignored... | Adjektivdeklination B1

In most German textbooks you will learn about "Adjektivdeklination" for definite and indefinite articles. But what about "Possessivartikel" & "Negativartikel"? Do they follow the indefinite or the definite article rules? It's actually a mix and you will find out in this German B1.1 grammar lesson about the German declension of adjectives for possessive articles (mein, dein, sein...) and negative articles (kein, keine, keinen...). And the good news first: They both follow the same rules. 😊👏