- Earth Science (36)
- Earth's System (14)
- History of Earth (7)
- Human Sustainability (15)
- HSus 1: Forecasting Disasters (MS) (1)
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- Natural Selection & Evolution (18)
- Structure and Function (42)
- Inheritance & Variation of Traits (25)
- Non-NGSS Articles (24)
- Physical Science (48)
- Chemical Reactions (21)
- CR 1: Determining Chemical Reactions (MS) (5)
- CR 1: Predicting Reactions (HS) (4)
- CR 2: Energy in Reactions (HS) (8)
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- Energy (11)
- E 1: Energy Flow (HS) (6)
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- Forces & Interactions (13)
- F&I 1: Newton's 2nd Law (HS) (6)
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- Structure & Properties of Matter (31)
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- Chemical Reactions (21)
