Word Recognition Flash Cards include: Things that go together, opposites,singular and plural. 3 flash card sets, 162 cards. Ages 4+. This value pack of flash cards includes 3 sets of 54 cards for teaching word recognition. Covers: things that go together; opposites; and singular and plurals. Visual arrays are provided to help children see the mathematical relationships. Teaches fast, automatic recall. A perfect activity for independent or guided learning.