The caterpillar has 24 bodies with a blend or digraph on each body. There are a couple of bodies that are blank for you to add more. Each body has four lines on them for you to come up with words as a class that contain the blend or digraph.
I printed my caterpillar bodies on card stock and laminated them so I could use a dry erase marker on them so I can reuse them each year. I introduce one blend/digraph a week.
There is also a black and white version included so that you can print on colored card stock if you can't print them in color.