The Theory of Improbabilities (set of two books)

"Back to the Future," you say? "Back to your probability" - the problem is much more complex! And Matvey will have to solve it alone - for it all started one late evening when he stepped out of the house... for a moment and ran into some local bullies… That Monday was just not going well: the internet was down in the morning, he was kept after school, and then his mom hit him with the horrible news - a strange girl will be living with them now! How could such a day end? By fleeing from three bandits who want to take Matvey's phone; by taking a ride in a half-empty bus to the outskirts of the city; and a desperate attempt to hide in an abandoned concrete pipe. And ending up in an alternate universe where no Matvey Dobrovolsky exists, and instead, there is a girl named Miloslava! There is no help to expect: who would believe the tale of a seventh-grader lost between worlds? Not teachers, not classmates, not parents, not friends (of which Matvey has none). Except for the strange, perpetually troubled Venya Vatrushkin? Now, there's someone who understands fantastic plots!
Victoria Leder-man understands fantastic plots just as well as her hero, and her new story "The Theory of Improbabilities" is a wonderful example of an engaging, modern, and unobtrusively educational work. The writer's previous books - "The Mayan Calendar," "No Lessons Will Be Held," "Just Eleven, or Shury-Mury in the Fifth 'D'," "To the Board Will Go… Vasilkin!" - have become bestsellers among readers of junior and middle school age.
For middle school age.