Teejay Publishers is a large supplier of math resources in several countries. They have written math core books and support materials for over 20 years based on research about what students and teachers need to succeed in math. Their materials provide mastery of fundamentals, support for curriculum leaders, and allow teachers more time for planning. Their platform provides graded lessons, assessments, and easy-to-use management tools to support student learning and data-driven decisions. It is designed to make math fun and engaging for students while being easy for teachers to manage.