Constructing the Argument
Constructing the argument in the liquid oxygen case study requires students to form a scientific claim, support it with evidence, and apply phase change reasoning to explain why liquid oxygen production failed. In Amplify Science (California) Grade 7, Chapter 4: Science Seminar (Case Study: Liquid Oxygen), students practice the formal claim-evidence-reasoning structure.
Key Concepts
Solving the problem requires a formal scientific explanation . Investigators formulate a Claim (e.g., "The cooling tank is broken").
They support this with Evidence (e.g., "Temperature readings inside the tank are higher than normal"). This structure ensures the diagnosis is based on facts rather than guesses.
Common Questions
How do you construct a scientific argument?
A scientific argument has three parts: a Claim (a proposed explanation), Evidence (data that supports it), and Reasoning (the scientific principles connecting the evidence to the claim).
What is the liquid oxygen case study in Grade 7 science?
In Amplify Science Grade 7, students investigate why a machine failed to produce liquid oxygen. They use phase change principles to construct an argument: the cooling system failed because it could not remove enough thermal energy to slow the oxygen molecules enough to condense.
What is the claim-evidence-reasoning (CER) framework?
CER is a scientific writing framework where Claim states the answer, Evidence provides supporting data, and Reasoning explains how the evidence supports the claim using scientific principles.
Where is constructing the argument taught in Amplify Science Grade 7?
Constructing the argument is covered in Amplify Science (California) Grade 7, Chapter 4: Science Seminar (Case Study: Liquid Oxygen).