Use this 'Spelling Level 1, unit 1 (primary)' printable worksheet in the classroom or at home. Your students will love this 'Spelling Level 1, unit 1 (primary)'. Worksheets to help learn these spelling words: a, am, I, at, is, an, by, do. Cloze exercise, word search, missing letters and more! First of a complete set on our member site.