Pre-school math worksheets. Teach how to count by ones for pre school and kindergarten. Counting by 1 worksheets. First grade math worksheets. Boost early math skills with our free set of engaging teaching activities and worksheets! Designed for Pre-K to 1st grade students, these resources make learning to count by one a breeze. From fun counting games to printable worksheets, our materials provide a hands-on approach to mastering this fundamental math concept. Don't miss out on this valuable resource for educators and parents alike. Start counting with confidence today!