Unit One 1
Text A Would You Have Believed It? 1
Text B Body Talk 11
Unit Two 21
Text A Learned Words and Popular Words 21
Text B Some Things We Know about Language 32
Unit Three 40
Text A Happy Birthday and Birthday Cakes 40
Text B Solving Problems Scientifically 51
Unit Four 61
Text A Education Around the World 61
Text B Language 72
Unit Five 81
Text A People and Colors 81
Text B How Colors Affect Your Moods and Health 93
Unit Six 103
Text A The Importance of Being Kind and Polite 103
Text B Why Don't Girls Think Like Boys? 114
References 148