Unit One Text A Putting Definiteness of Purpose to Work Text B Positive Mental Attitude (PMA) Unit Two Text A To Live or to Die Text B Indoor Plants, a Magic Unit Three Text A Friendship Text B Love Conquers All Unit Four Text A The World of Robots Text B Computers Unit Five Text A Men and Women: Some Differences Text B The Door Swings Open Unit Six Text A Would You Have Believed It? Text B Star Wars--and Einstein Unit Seven Text A Learned Words and Popular Words Text B Some Things We Know about Language Unit Eight Text A Education around the World Text B Language Unit Nine Text A Christmas Day in the Morning ( I ) Text B Halloween Unit Ten Text A Christmas Day in the Morning ( II ) . Text B Easter Unit Eleven Text A Leisure and Leadership Text B "Happy Birthday to You!" Unit Twelve Text A The Midnight Visitor Text B Modern Spying Unit Thirteen Text A People and Colors Text B How Colors Affect Your Moods and Health Unit Fourteen Text A Scientific Attitudes Text B Solving Problems Scientifically Unit Fifteen Text A Non-verbal Communication Text B Body Talk Unit Sixteen Text A The Importance of Being Kind and Polite Text B Why Don't Girls Think Like Boys? Vocabulary