August Ferdinand Moebius (born Schulpforte, Germany, 1790; died Leipzig, Germany, September 26, 1868) was a mathematician. He was especially interested in topology, a branch of mathematics that involves space and surfaces. Children can participate in an interesting topology problem by seeing if they can peel an orange so that the peel stays in one piece. They can also learn about a Moebius Strip at: Moebius Strip.
Christopher Paolini (born New York, 1983) writes fantasy for young adults. He is best known for his Inheritance Cycle. His website is filled with information and activities: Christopher Paolini.