
Public learning track
Experimental Design, Variables, and Laboratory Safety
7th Grade · Science · Open Global Science
5 lessons
Goal
Plan and conduct controlled, comparative, and descriptive investigations adhering to rigorous laboratory safety practices.
Featured Diagrams
Identifying Variables: Independent, Dependent, and Controlled
5 lessons
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- 1Identifying Variables: Independent, Dependent, and ControlledUp nextStart
- 2Designing Controlled and Reproducible ExperimentsPremiumNot started yet
- 3Conducting Comparative and Descriptive Field StudiesNot started yet
- 4Using Lab Tools and Instruments SafelyNot started yet
- 5Mitigating Risks and Hazard Controls in the Science LabNot started yet
Standards Covered
- OGS.8.SEP.2Open Global Science Standards 2026™ · Science · Level 8 / Grade 7 (Age 12) · Grade 7Plan and conduct controlled, reproducible experimental, comparative, and descriptive investigations, identifying and manipulating independent, dependent, and controlled variables while following rigorous safety protocols.
- OGS.8.SEP.3Open Global Science Standards 2026™ · Science · Level 8 / Grade 7 (Age 12) · Grade 7Select and safely use laboratory tools and digital instruments to collect quantitative data in International System of Units (SI) and qualitative observations with precision, resolution, and accuracy.
Curriculum Framework
7th Grade · Science · Open Global Science
1
5 lessons
Scientific Inquiry, Questions, Hypotheses, and Laws
Formulate testable scientific questions and engineering problems while distinguishing hypotheses, theories, and scientific laws.
2
5 lessons
Experimental Design, Variables, and Laboratory Safety
Plan and conduct controlled, comparative, and descriptive investigations adhering to rigorous laboratory safety practices.
3
5 lessons
SI Precision Measurement and Digital Data Acquisition
Collect high-precision quantitative SI data and systematic qualitative observations using analog and digital laboratory instruments.
4
5 lessons
Data Processing, Graphical Analysis, and Uncertainty
Process experimental data, construct linear and non-linear plots, calculate central tendencies, and quantify measurement uncertainty.
5
4 lessons
Scientific and Engineering Modeling
Develop, evaluate, and refine physical, conceptual, and mathematical models to explain systems and evaluate engineering designs.
6
4 lessons
Empirical Data Analysis and Error Evaluation
Analyze datasets and secondary literature to identify causal relationships, isolate anomalies, and evaluate scientific claims.
7
4 lessons
Crosscutting Concepts: Systems, Matter, and Energy
Apply crosscutting concepts such as structure and function, conservation of mass and energy, and dynamic equilibrium to explain natural systems.
8
5 lessons
Scientific Argumentation and Communication
Construct evidence-based arguments using the Claims-Evidence-Reasoning framework, cite sources, and engage in peer review.
9
4 lessons
Science in Society: History, Ethics, and STEM Careers
Evaluate the evolution of scientific knowledge over time, analyze ethical considerations in policy, and explore diverse STEM career pathways.