Who’s available to crack a case of “main idea?” The Mailbox®, of course! Activities, learning centers, graphic organizers, and worksheets help student investigators track down main ideas and the details that support them. Budding sleuths can pat down passages of fiction and informational text in search of main ideas and supporting details. Super sleuths can backup their evidence with notes and detailed outlines. Even though main-idea cases can be tough to crack, the teacher-approved teaching resources found at www.themailbox.com are sure to get the job done.