| http://websterfw.com/published/phelan_graphing_activities/phelan_graphing_activity_ch01.html | Chapter 1. Chapter 1: Rainy Days and Mondays
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| http://websterfw.com/published/phelan_graphing_activities/phelan_graphing_activity_ch02.html | Chapter 1. Chapter 2: Elements in the Human Body
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| http://websterfw.com/published/phelan_graphing_activities/phelan_graphing_activity_ch04.html | Chapter 1. Chapter 4: Photosynthetic Pigments
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| http://websterfw.com/published/phelan_graphing_activities/phelan_graphing_activity_ch05.html | Chapter 1. Chapter 5: Genomes of Various Organisms
| 4f8209bcb11c0f0e56000000 |
| http://websterfw.com/published/phelan_graphing_activities/phelan_graphing_activity_ch08.html | Chapter 1. Chapter 8: Radiometric Dating
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| http://websterfw.com/published/phelan_graphing_activities/phelan_graphing_activity_ch09.html | Chapter 1. Chapter 9: Human Food Preference
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| http://websterfw.com/published/phelan_graphing_activities/phelan_graphing_activity_ch14.html | Chapter 1. Chapter 14: Population Timeline
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