KATHRIN AYER

German Case Practice is a super-focused learning app. Practice German case declension in all four ca

It's dinner time and the animals are hungry, but they are such picky eaters! The bunny wants car

Classic Whack-a-mole? Not exactly! Moles have infiltrated the Company, so be careful who you whack.

If you live in a big city, you have seen each of these people. You've wanted to express these ex