Meaning of the word "open your book" in English

What does "open your book" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

open your book

US /ˈoʊpən yʊər bʊk/
UK /ˈəʊpən jɔː bʊk/

Phrase

an instruction to open a book to a specific page or simply to begin reading

Example:
The teacher told the students, "Open your book to page 25."
Before we start the lesson, please open your book.