Not Nothing by Gayle Forman

In this multigenerational middle grade novel of hope, compassion, and forgiveness from #1 New York Times bestselling author Gayle Forman that is as timely as it is timeless, a boy who has been assigned to spend his summer volunteering at a senior living facility learns unexpected lessons that change the trajectory of his life.

Alex is twelve, and he did something very, very bad. A judge sentences him to spend his summer volunteering at a retirement home where he’s bossed around by an annoying and self-important do-gooder named Maya-Jade. He hasn’t seen his mom in a year, his aunt and uncle don’t want him, and Shady Glen’s geriatric residents seem like zombies to him.
Josey is 107 and ready for his life to be over. He has evaded death many times, having survived ghettos, dragnets, and a concentration camp—all thanks to the heroism of a woman named Olka and his own ability to sew. But now he spends his days in room 206 at Shady Glen, refusing to speak and waiting (and waiting and waiting) to die. Until Alex knocks on Josey’s door…and Josey begins to tell Alex his story.