Maru-sensei no ○○ ga Kawaii.

Airheaded, but serious, and with nothing to spare! "I want to be a great teacher!" says the new grade-school teacher, Maru Hana, while fruitlessly spinning her wheels in days full of disappointing mistakes. Her innocence and clumsiness, akin to a child suddenly growing up, heals those around her. This is a 4 koma comedy about a teacher that sometimes gets pushed around, but slowly but surely comes into her own!

(Source: Futabasha, translated)