自じ由ゆう課か題だい

noun

freeform assignment; open-ended project

Often refers to a school assignment where students choose their own topic, especially a long-term project during summer vacation.

• 夏なつ休やすみの自じ由ゆう課か題だいで、昆こん虫ちゅうの観かん察さつ日にっ記きをつけた。

  For my summer vacation freeform assignment, I kept an insect observation diary.

• 自じ由ゆう課か題だいは何なにをやってもいいので、逆ぎゃくに悩なやんでしまう。

  Since you can do anything for the open-ended project, it actually makes me worry about what to choose.