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The Science Frameworks from the National Science Council describes what it means to be proficient in science.  This vision of proficiency aligns with a view of science as "both a body of knowledge and an evidence-based, model and theory building enterprise that continually extends, refines, and revises knowledge." This proficiency description presents three dimensions of science that is embodied in each science standard (
Three dimensions of NGSS (Next Generation Science Standards):

Dimension 1: Practices

The practices describe the attitudes and behaviors that scientists engage in as explore and develop models and theories about the natural world. The practices also contain a key set of engineering practices that engineers utilize as they design and build models and systems.  

Dimension 2: Crosscutting Concepts

Crosscutting concepts are broad themes that intersect all domains of the sciences and have applications. The CCCs offer a way of linking the different domains of science. They include: Patterns, similarity, and diversity; Cause and effect; Scale, proportion and quantity; Systems and system models; Energy and matter; Structure and function; Stability and change.

Dimension 3: Disciplinary Core Ideas

Disciplinary core ideas focus K–12 science curriculum, instruction and assessments on the most important conceptual understandings in the sciences. These DCIs are grouped to address four domains:

  • Physical Sciences
  • Life Sciences
  • Earth and Space Sciences
  • Engineering, Technology and Applications of Science

NGSS DocumentsTop of Page

NGSS ResourcesTop of Page

The NGSS Documents displayed on the left were downloaded from the Next Generation Science Website ( and the California Department of Education Website.  
Some helpful links are listed below:

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