Teachers must adapt their instruction to accommodate individual student disabilities, culture, and life experience to improve student learning in the classroom and to ensure that all students have the opportunity to improve their knowledge and skills. One method used is differentiated instruction. Differentiated instruction is based upon the idea that all students learn in different ways and that each learner needs to receive materials and methods of instruction that fit his/her individual learning style and the appropriate curriculum (Mastropieri & Scruggs, 2007, p. 126). Differentiated instruction works for all students, but is especially useful for students in special populations. The seven "building blocks" to help educators differentiate instruction are: (1) Know the learner; (3) Quality curriculum; (4) Positive classroom environment (appropriate class size, arrangement, population); (5) Flexible teaching and learning time; (6) Multiple methods of instruction; and (7) Multiple methods of assessment.