The Number Worlds, Level E (Grade 3) Teacher Edition provides lesson plans, Project Based Learning activities , and purposeful activities to help students develop conceptual understanding and computational fluency as they actively apply concepts.​ The TE also includes a differentiated learning guide.

Assessment tools allow teachers and administrators tocorrectly place and monitor at-risk students. A variety ofassessment options evaluate student proficiency, informinstruction, and visually track progress.

Assessment tools allow teachers and administrators tocorrectly place and monitor at-risk students. A variety ofassessment options evaluate student proficiency, informinstruction, and visually track progress.