Whole New World[s] (The Parallel Universe Adventures Book 1)

Ethan Jones is only 11 but already he's the man of the house, having to look after his little sister Lizzie and often bedridden mother. To escape the boredom of home he goes for long walks along the beach. But when he picks up a pebble-like device on the floor of the abandoned coastguard house, he literally finds himself in a whole new world. This is an inspiring tale of making new friends, of adventures in a parallel universe and, ultimately, of discovering how our own lives are so much better than the alternative.