Groovy Joe We're Going to Build a Rainbow

Groovy Joe We're Going to Build a Rainbow by Eric Litwin, illustrated by Tom Lichtenheld

The book is a song about a rainbow. It gets a little complicated. The story is not much of anything. Kids did not care for it. At least it was not very long.

Pete the Cat and His Four Groovy Buttons

Pete the Cat and His Four Groovy Buttons by James Dean (Illustrator), Eric Litwin (Author)

I am not a big fan of Pete the Cat and it's aesthetic. In this book, Pete's buttons fly off one by one. There is a simple math problem to identify how many are left. After they are all gone, he finds his belly button. I guess the easy math may be appealing?