First you will hear the digraph sound, then you will guess which letter combination matches that sound. If you choose the wrong digraph, it will disappear. When you select the correct digraph, you will see it come to life in a fun video clip. You will soon know all 13 digraphs! Featuring: ch, ck, gh, gn, kn, ng, ph, qu, sh, th, wh, wr & tch (trigraph). Preschool Prep Company DVDs have won over 100 awards and are used in millions of homes and schools around the world. You will be amazed at how easily you can learn digraphs!™