Trick or Treat

Halloween is fast-approaching, and to the kids in the neighborhood that means one thing and one thing only: candy! But they've learned from years of tootsie rolls and raisin boxes, and this year they're going in prepared. Months of diligent work have culminated in a map of the best houses in the neighborhood, the only ones worth visiting on your spooky rounds. Naturally, this information can't fall into the wrong hands (4th graders), so it's all been carefully hidden. But now the day is practically here, so it's time to crack the codes and assemble the map!