Taletrove’s review:

Unconventional illustrations. Curious and weirdly interesting. An inverted butterfly, a sun and a moon with faces.
A great way to teach a kid the life cycle of a butterfly along with the days in a week. Educational and entertaining.
I haven’t seen blue plums. But that’s Eric Carle for you.
I like how Eric Carle teaches kids something in every book, in a fun way.

Check out the ‘Learning tools’ section for more activities to do with kids using this book.