To help us understand all the many living things on Earth, scientists group them by their similar traits. This is called, Biological Classification. From elephants to algae, all...(Read more...)
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National Science Standards for Classification of Living Things

1. Unifying Concepts And Processes Standard
Conceptual and procedural schemes unify science disciplines and provide students with powerful ideas to help them understand the natural world.
K-4 Systems, order, and organization, Evidence, models, and explanation, Change, constancy, and measurement, Evolution and equilibrium, Form and function
5-8 Systems, order, and organization, Evidence, models, and explanation, Change, constancy, and measurement, Evolution and equilibrium, Form and function
9-12 Systems, order, and organization, Evidence, models, and explanation, Change, constancy, and measurement, Evolution and equilibrium, Form and function

3. Life Science Standards
Science subject matter focuses on the science facts, concepts, principles, theories, and models that are important for all students to know, understand, and use.
K-4 Characteristics of organisms, life cycles of organisms, organisms and environments
5-8 Structure and function in living systems, reproduction and heredity, regulation and behavior, populations and ecosystems, diversity and adaptations of organisms
9-12 The cell, molecular basis of heredity, biological evolution, interdependence of organisms, matter, energy, and organization in living systems, behavior of organisms