The First Grade Ultimate Skill Builder Workbook supports readiness for school-level work and covers a complete range of academic skills including: initial and ending consonant. sounds, short and long vowel sounds, blends, digraphs, diphthongs, nouns and verbs, addition, subtraction, money concepts, and more! The Addition Workbooks skill include addition related to subtraction, facts 0-18, addition strategies, number line addition, fact families, word problems, and time tests. The Subtraction Workbook skills include facts 0-18, subtraction strategies, fact families, word problems, time tests, and subtraction related to addition. Includes the First Grade Ultimate Skill Builder Workbook, Addition Workbook, Subtraction Workbook, Subtraction Flash Cards, and Addition Flashcards. Recommended age 6+ years