Ray L. H. has a PhD. in chemistry. He has taught college chemistry classes and has tutored students in the sciences. He has served as a judge at science fairs (school, regional, state, and national). He has a DoD Top ... learn more
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Sterling, VA 20164 and OnlineCost: $25 Per 30 Minutes Company: TakeLessonsSubjects: Algebra 1, General Mathematics, Chemistry, Earth Science, General Science ... and 10 more