“First graders" are four unusual stories about children, birds, animals and not only. What are four rook buddies discussing on the snowy ice of the Fontanka? Why did the staid and judicious Badger lose peace and fall out of love with its cozy hole? Who is the tundra, and how did the boy Petya save the northern nature? And, of course, what does a first-grader need to do to tame the letter "w"?