While the Activity Booklet highlights Sacagawea's story, the Biography gives a more in-depth telling of her life. The reader will learn how Sacagawea was kidnapped as a child only to become the teenage hero of a famous expedition. It also pays a small tribute to the 20th-century woman who discovered Sacagawea's story and shared it with the world. The Biography includes quotes from Clark's journal illustrating Sacagawea's innate wisdom.