A surprised librarian and a young reader watch as dancing dinosaurs in a book leap off the page and into the school, causing havoc in the classroom and on the playground.

When Polly's father goes overseas to fight in World War I, her whole world changes. Though the war is in Europe, its effects are felt on American soil. There are food, fuel, and other supply shortages everywhere. Even something as simple and enjoyable as a family Sunday car ride isn't possible anymore. Everyone must do their part to help the war effort. Victory gardens are planted and scrap metal is collected. "It's the biggest event in our history....