B.S. (Agriculture) University of Arizona. Ms. Phalen has been an educator for 25 years and is currently teaching HOPE Chemistry (Health Occupations Preparatory Education) and Introductory Chem-Physics. In the past, she has taught a wide range of courses including Honors Chemistry, General Chemistry, and Biology. She enjoyed developing the “Troubled Waters” lesson plan as it is designed to address the world water crisis from a chemical and biological stand point.