About The Mailbox Magazine - Grades 4-6: For teachers of grades 4-6: This edition of The Mailbox Magazine is filled with tips on how to inspire and motivate children to learn in your classroom. Each issue is filled with ready-to-go activities you can use immediately. You'll also find graphic organizers, management tips and time-savers, activity cards, math and writing prompts, and much more. Additionally, each magazine includes teacher-tested ideas for math, language arts, science, and social studies. Subscribe today, and learn what teachers like you are doing to help students succeed.