OGS.9.SEP
Open Global Science Standards 2026™ · 8th Grade
Scientific and Engineering Practices: Empirical Inquiry, Mathematical Modeling, Nature of Science, and Societal Contexts
Grade8th Grade
SubjectScience
Levelstrand
Child standards (7)
- OGS.9.SEP.1Formulate testable research questions, hypotheses, and engineering problem definitions based on phenomena, scientific models, and established theories; distinguish among hypotheses, theories, and scientific laws.
- OGS.9.SEP.2Plan and conduct descriptive, comparative, and experimental investigations; identify, control, and manipulate independent, dependent, and controlled variables; and maintain rigorous laboratory safety and cultural site protocols.
- OGS.9.SEP.3Select and safely use precision measurement tools and sensors to acquire quantitative data in SI units (length, mass, volume, temperature, voltage, force) and record qualitative empirical observations systematically.
- OGS.9.SEP.4Construct and apply mathematical representations, tables, graphs, models, and statistical features across repeated trials to analyze trends, assess quantitative relationships, identify anomalies, and quantify experimental error.
- OGS.9.SEP.5Develop, evaluate, and refine physical, conceptual, and digital models of phenomena and engineering designs, identifying advantages, scale factors, material limitations, and system component interdependence.
- OGS.9.SEP.6Construct, communicate, and defend evidence-based scientific explanations and arguments; critically evaluate secondary sources, conflicting claims, and methodologies; and practice collaborative academic skepticism.
- OGS.9.SEP.7Evaluate how scientific knowledge evolves with new empirical evidence and diverse cultural perspectives; analyze personal and public health decisions regarding nutrition, exercise, and substance use; and explore STEM career pathways.