This story is similar to The Day the Crayons Quit in that Duncan receives letters from various crayons telling him that he forgot them. At the end, he goes back for his crayons, and builds a huge house for them all to live in.
This book is more for entertainment purposes to be read after the first one. I could use it as a beginning to another creative writing lesson. The students could, again, write a sorry letter to their lost crayons, or pretend to be a lost crayon. It could also lead into a science experiment. The students could learn about heat by melting crayons, or they could perform surgery to see if a paperclip really could hold a crayon together. They could also learn how to colors combine to make another color if they melted them. This book would be good, again, for first or second grade.