Children will build skills in one-to-one correspondence with these durable, double-sided flash cards. Featuring numbers 0 through 25 in word, picture and numerical form, the pack is essential for building number sense. On front, each card shows animal pictures to help learners understand how numbers can be seen as sets. On back, the card has the corresponding numeral and number word. Comes with teaching tips. Includes 56 cards with rounded corners and prepunched holes for easy organization and storage; each card measures 3 1/8" x 5 1/8".