観かん察さつ日にっ記き

noun, noun, used as a suffix

observation diary; observation journal

A diary or journal for recording observations, commonly used in educational contexts such as nature observation, plant growth, or weather records. Often appears as a suffix in compound titles like 植物観察日記.

• 夏なつ休やすみの宿しゅく題だいで、朝あさ顔がおの観かん察さつ日にっ記きをつけた。

  For summer homework, I kept a morning glory observation diary.

• 先せん生せいは毎まい日にち、天てん気きと気き温おんを観かん察さつ日にっ記きに記き録ろくしている。

  The teacher records the weather and temperature in an observation diary every day.