This document provides guidance for teachers on conducting "Mystery Location Calls" between classrooms to build global collaboration. It outlines preparing students by finding partner classes and sharing key details. During the call, students ask questions to guess each other's locations, while taking on roles like greeter, questioner, or note-taker. Teachers are encouraged to have students share cultural gifts like songs, food, or recorded messages. These calls help make learning fun and meaningful by connecting students globally in a safe way that models proper online etiquette and builds international understanding.