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Public learning track
Cell Biology, Microscopy, and Enzyme Action
8th Grade · Track 241 of 447 · 6 lessons
6 lessons
Goal
Prepare and observe temporary slide mounts, model organelle functions, and investigate factors affecting enzyme-catalyzed reactions.
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Preparing and Staining Temporary Microscope Mounts
Public learning track
Classification and Separation of Matter
8th Grade · Track 242 of 447 · 7 lessons
7 lessons
Goal
Classify substances particulate-by-particulate and apply experimental techniques to separate mixtures and purify salts.
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Comparing Heterogeneous Mixtures and Homogeneous Solutions
Public learning track
Plate Tectonics, Crustal Dynamics, and Geological History
8th Grade · Track 243 of 447 · 9 lessons
9 lessons
Goal
Analyze tectonic plate movements, boundary landforms, volcanic features, and historical geological evidence.
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Evidence for Continental Drift: Fossils, Rocks, and Coastlines
Public learning track
Scientific Questions, Hypotheses, and Theoretical Frameworks
8th Grade · Track 244 of 447 · 5 lessons
5 lessons
Goal
Formulate testable questions and hypotheses, define engineering design problems, and distinguish among hypotheses, theories, and scientific laws.
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Formulating Testable Scientific Research Questions
Public learning track
Chemical Reactions, Conservation of Mass, and Gas Generation
8th Grade · Track 245 of 447 · 7 lessons
7 lessons
Goal
Identify indicators of chemical change, write balanced chemical equations, and generate and test common gases.
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Signs of a Chemical Reaction: Color Change, Gas, Precipitation, and Heat
Public learning track
Experimental Design, Variables, and Field Safety
8th Grade · Track 246 of 447 · 5 lessons
5 lessons
Goal
Plan and conduct descriptive, comparative, and experimental investigations while manipulating variables and upholding rigorous laboratory and field protocols.
Featured Diagrams
Identifying Independent, Dependent, and Controlled Variables
Public learning track
Hierarchical Organization and Human Organ Systems
8th Grade · Track 247 of 447 · 5 lessons
5 lessons
Goal
Analyze how multicellular systems integrate from cells to organ networks to sustain human homeostasis and immune defense.
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Hierarchical Organization: From Specialized Tissues to Systems
Public learning track
The Rock Cycle and Formation Environments
8th Grade · Track 248 of 447 · 8 lessons
8 lessons
Goal
Trace rock cycle transformations over deep time and relate rock properties and commercial uses to their formation conditions.
Public learning track
Biogeochemical Cycles, Watersheds, and Human Earth Impacts
8th Grade · Track 249 of 447 · 8 lessons
8 lessons
Goal
Investigate global carbon flows, watershed processes, soil erosion mechanisms, and anthropogenic impacts on water and climate.
Featured Diagrams
Interactions Between Earth's Spheres
Public learning track
Plant Anatomy, Physiology, and Bioenergetics
8th Grade · Track 250 of 447 · 5 lessons
5 lessons
Goal
Investigate plant vascular transport, floral morphology, seed germination dynamics, and photosynthetic starch synthesis.
Featured Diagrams
Plant Tissue Systems and Transport