IPA: /ˈwɜːrkˌbʊk/
KK: /ˈwɜrkˌbʊk/
A book used for recording work or exercises, often containing problems for students to solve directly on its pages.
The teacher handed out a workbook for the students to complete their math exercises.
**Workbook** → It is formed from "work" (from Old English *weorc*, meaning activity or labor) and "book" (from Old English *bōc*, meaning a written work or text). A workbook is a book designed for work, often containing exercises or tasks to be completed.
Think of a 'book' that is specifically for 'work' — a workbook is a written resource for doing activities.