Tomlinson, Carol A. Integrating differentiated instruction and understanding by design : connecting content and kids / Carol Ann Tomlinson and Jay McTighe. - Alexandria, VA : ASCD, 2006. - vii, 199p ; 23 cm. Includes bibliographical references and index. Open access. ISBN: Subjects--Topical Terms: Teaching.Learning.Curriculum planning.Individualized instruction.Mixed ability grouping in education.Education--Research.