Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Joseph Priestley
an English chemist, philosopher, dissenting clergyman, and educator. He is known for his investigations of carbon dioxide and the co-discovery of oxygen.
Sophia Learning
Sophia: The Biosphere: Lesson 2
This lesson will discuss the importance of the biosphere (the global ecosystem) to living things. It is 2 of 3 in the series titled "The Biosphere."
Sophia Learning
Sophia: Animals: Human Respiratory System: Lesson 3
This lesson provides an overview that explains the respiratory system in humans. It is 3 of 5 in the series titled "Animals: Human Respiratory System."
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