Recent research has identified interventions that improved achievement for students with low test scores in mathematics. The Assisting Students Struggling with Mathematics: Intervention in the Elementary Grades practice guide, developed by the What Works Clearinghouse™ (WWC) in conjunction with an expert panel, distills this recent research into six easily comprehensible and practical recommendations for educators to use when teaching elementary students with low test scores in mathematics. The practice guide focuses on practices and principles underlying effective small-group interventions for students in grades K-6. This summary introduces the six recommendations described in the full practice guide and the supporting evidence for each recommendation. These recommendations are designed to help educators, including mathematics general and special education educators, mathematics specialists and coaches; school, district, and state personnel; and parents. [For the full practice guide, see ED611018.]