Unit One Big Bucks the Easy Way 1
Unit Two Deer and the Energy Cycle 38
Unit Three Why Do We Believe That the Earth Is Round? 65
Unit Four Jim Thorpe 90
Unit Five To Lie or Not to Lie—The Doctor's Dilemma 125
Unit Six How to Mark a Book 151
Unit Seven The Luncheon 176
Unit Eight The New Caves 206
Unit Nine Journey West 232
Unit Ten Why People Work 260
Key To Summary Writing 293
Index 300