ClassroomClassroom SolutionsEarly LearningClassroom ResourcesClassroom CollectionsBirth–Age 3 HMH Early Learning Classroom Collections - Ages Birth to 3 Aligned to 10 core learning areas, our Early Learning Classroom Collections provide small and medium libraries. Small Classroom Collection Our Small Classroom Collection consists of 10 titles. Shop Now Medium Classroom Collection Our Medium Classroom Collection includes all titles in the Small Collection as well as an additional 10 titles. Shop Now