Test your brain and learn about renowned thinkers with these doodles, puzzles, games and more! Ultimate Activities for History's Greatest Brains challenges you to think like some of the smartest people in history! Expand the capabilities of your own brain with activities and games such as 'Crazy Inventions,' 'Identify These New Species,' and 'Element Wars.' Kick your brain into high gear while getting to know some of the world's greatest scientists, inventors, space explorers, leaders, writers and artists. Your brain juices will begin to flow with activities that help you discover new animal species, invent something wacky, meet space aliens, become a world leader, write a play for your friends and create a self-portrait masterpiece. Give your brain a good workout, have some fun and become one of the future's greatest brains!