2Partner has designed, developed, and written small group math lessons for students elementary through Algebra 2. 2PSG lessons are designed to engage students and teachers in conceptual mathematics through the use of manipulatives, models and visual supports. 2PSG lessons have an intentional design for teacher preparation, lesson delivery and student engagement. The predictable design of these lessons support effective delivery by a range of educators including classroom teacher, interventionist, tutor, or support person as they move students toward proficiency in math.