Fun, but with little relevance to school

Fun book to address relationships with others, but there is too light and shallow for my taste. It is not clear why this little bear said "no" to everything and the ending of the book comes a little like a hair in the soup: to verify that this little bear can not say "yes", one of his buddies class offers him a candy. The little bear still answers "no", but the candy disappears (hello franchise and the image that is given of this little bear!). An argument then begins to dissipate and the mistress offers sweets to everyone .. Finally, the little bear does not want to go home because he prefers to eat sweets with others ... this is little credibility, suggesting that one can buy children with sweets, the episode of the "disappearance" of the candy is questionable and irrelevant, but especially the book does not address at all the school life .