You’ve no doubt been fielding difficult questions about the Broadway strike from children confused and upset by the headlines. Or not. Either way, now’s the perfect time to take them backstage with this new book by Broadway producer Thomas Schumacher. Geared toward tweens, it offers a comprehensive look at the players involved in making productions work, from the stage director to the ushers. And it’s not just a professional primer — there are neat touches like a sketchbook for designing costumes, a real Playbill, and a mock ticket.