This set contains 9 header cards, 84 picture cards, and 84 matching word cards to teach common diphthongs including oi, oy, oo, ou, ow,au, aw, and ew. The cards work great in a pocket chart (but could be used in other ways as well). The cards work great to introduce the sounds during phonics lessons, for sorting activities, and for matching words to pictures. They can be used in whole group lessons, as well as part of a learning center. The cards have a very clean look with beautiful graphics and a large, easy to read font.