Textbook
noun
The thing you use to teach a course with writings is a textbook. It's a book of writings you use to teach your course!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
教科書を使う
to use a textbook
教科書を作る
to make a textbook
教科書を読む
to read a textbook
国語の教科書
textbook on the Japanese language
高校の教科書
high school textbook
学校の教科書
school textbook
教科書に書く
to write in a textbook
教科書に出てくる
to appear in a textbook
教科書にのる
to appear in a textbook
その日本語の教科書は高すぎて買えません。
I can't buy the Japanese textbook because it's too expensive.
教科書はウェブから不正ダウンロードしないで、ちゃんと買ってくださいね。
Please don't illegally download textbooks from the web; instead, buy them properly.
明日、計算ドリルと国語の教科書を持って行かなきゃいけないんだって。
We were told that tomorrow, I have to bring my math drills and Japanese textbooks.