This is the word list dictionary for Horizon's 1st grade spelling and vocabulary program. The dictionary  contains the words presented at this level used in a sentence, the part of speech that it represents, and other forms of the word.

Level 1 (generally 1st grade) covers: short vowel words, long vowel words, contractions, plurals, suffixes (e.g. –er), consonant digraphs (e.g. kn), vowel digraphs (e.g. au), compound words, consonant blends, synonyms, antonyms, homophones, and r-controlled words.

The program consists of 160 lessons for a 32-week academic year. The student book, student workbook, and teacher's guide are sold separately.