Lessons by Topic

Explore our library of inquiry-based, field-tested, standards-aligned lessons and supporting content. Materials are sorted by topic and grade level, and can be downloaded as PDF documents for classroom use.
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Human Organism
Lessons
Cells, tissues, organs, body systems, human body, human physiology, health and wellness, diseases, sleep and performance, human nutrition
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Kinds of Organisms
Lessons
Systems of classification, process of classification (grouping of organisms based on shared characteristics) and kinds of organisms.
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Matter and Energy Flow
Lessons
Materials, properties of matter, phases (solid, liquid, gases); energy flow, including processes in living systems (respiration, fermentation, photosynthesis, energy reactions in cells)
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Microorganisms
Lessons
Bacteria, archaebacteria, fungi, protists, algae, viruses, infectious diseases, helpful microorganisms, microbiome
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Molecular Genetics
Lessons
DNA and RNA structure and function, gene regulation, proteins, mutation, viral structures and replication, genomics, medical genetics
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Nature of Science
Lessons
Contributions by scientists, how scientists go about their work (methods of science), hypothesis, scientific questions, science careers, history of science.
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Plants: Form and Function
Lessons
Roots, stems, leaves, transport, life cycles and reproduction, nutrition, adaptations, development
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Space Life Sciences
Lessons
Effects of microgravity on body systems, countermeasures to promote astronaut health in space
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Space Science
Lessons
Sun, solar system, planet, star, galaxy, moon, orbit
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Tools and Techniques
Lessons
Introduction to science laboratory tools, techniques and best practices.