Mostly all of the cards and letter strips are CVC based but some challenge the children’s knowledge on blending, segmenting, graphemes and digraphs. You simply insert the letter strip you want into the chosen card and move it up and down. I have colour coded the letter strips to match a card and have made three letter strips per card! The word families included are: ab, an, at, ag, ap, ack, og, ot, op, ed, et and ip. In total, there are 12 word family cards and 36 letter strips.