In the sixth book in the New York Times –bestselling chapter book series about the childhood of America's favorite housekeeper, Amelia Bedelia and her friends clean up a vacant lot in their neighborhood and build a clubhouse for explorers. Includes a guide to the idioms used in the book and features black-and-white art throughout. Amelia Bedelia and her friends are determined to find a cool clubhouse, maybe even a tree house for their explorers' club! One day they discover an empty lot with a huge tree in the middle of it. It's the perfect spot for club headquarters. The lot is a mess, so they pitch in and clean it up. And that's when the trouble really starts. Short, fast-paced chapters, tons of friends and funny situations, and black-and-white illustrations on every page make the Amelia Bedelia chapter books an ideal choice for readers of the Ivy + Bean, Magic Tree House, and Judy Moody books. The Amelia Bedelia books have sold more than 35 million copies!