Participants will learn to adapt classroom lessons for a diverse group of learners in grades 3-8. The speakers will share evidence-based strategies from the IES Practice Guide (Gersten et al., 2009) such as concrete-semi-concrete-abstract (CSA) and others that emphasize developing a balanced understanding of both concepts and skills. Participants will experience classroom-tested tasks that create more robust learning and focus on ways in which to question students to promote learning and to assess in a formative way. This session will also discuss the use of assessments such as: 1) diagnostic interviews to carefully tailor instruction for students who struggle with learning mathematics and; 2) progress monitoring tools that emphasize conceptual understanding. By sharing a variety of classroom-tested activities, the presenters will show how to link Common Core State Standards to engaging and motivating mathematics instruction.