ことばドリル | NHK for School
https://www.nhk.or.jp/kokugo/drill/origin/drills.html, posted 2020 by peter in education free injapanese japan language online
Japanese language exercises aimed at school children but also great for non-native learners like me. For me it didn't work in Firefox, which is my preferred browser, but this could possibly be because of my
paranoid privacy-enhancing browser extensions.