参さん考こう書しょ

noun

reference book; study guide; supplementary textbook

A book used alongside a main textbook or for self-study, often containing explanations, practice problems, or reference material. Common in educational contexts.

• 試し験けん前まえに参さん考こう書しょを買かって勉べん強きょうした。

  I bought a study guide and studied before the exam.

• この参さん考