Colo and Theo Go to the Beach Consonant Sounds 2.1 /d/ sound Flint Goes to the Doctor's Office Addition, Subtraction, Multiplication, & Division Concepts My First Book of Alphabet Consonant Digraphs 25 /wh/ sound An Introduction to the History of the United States of America Grade Five Vocabulary Acquisition & Usage Consonant Digraphs 20 /th/ sound