The Grade 3 Informational Text Reading Inventory (ITRI) was developed to address the specific reading challenges that grade 3 students encounter as they move from reading largely narrative textbooks in grade 2 to being expected to read and comprehend more dense and content-driven text in grade 3. This booklet contains all of the information teachers need to use the Grade 3 ITRI materials, including assessments, lessons and graphic organizers, answer keys, student scoring sheets, and a survey of the scientifically-based reading research that is foundational to ITRI. Because all Grade 3 ITRI content comes from "Indiana's Academic Standards" for grade 3, the ITRI materials will enhance the subject matter teachers already teach. Students will always learn the reading skills within the context of their content area curriculum. Appended are: (1) Critical Differences in Grade 2 and Grade 3 Textbooks; (2) The Scientifically-Based Reading Research (SBRR) Behind Grade 3 ITRI; (3) Chart of Academic Standards Addressed Across the Curriculum; (4) Metacognitive Reading Survey Scoring Key; (5) Scoring Sheet: ITRI Assessments; (6) Scoring Sheet: Grade 3 ITRI Lessons; (7) Instructions for Using the Graphic Organizers with Hop To It; and (8) ITRI Acknowledgements. A glossary and an index are included.