Concept Development: What Strong Observation Evidence Can Look Like

Focus on the quality of teacher-student interactions, organization, feedback, conceptual development, and the emotional conditions for learning. For Concept Development, the strongest preparation question is not “Did I mention it?” but “What student evidence will make this part of CLASS observable?”

A classroom micro-scenario

Students sort examples by underlying principle, defend the rule they inferred, then test whether the rule holds with a counterexample.

Teacher moves that fit this component

• ask how and why, not only what
• connect examples to general principles
• invite prediction and analysis

Evidence students can produce

• students explain relationships
• students generate or test hypotheses
• students transfer ideas to new examples

What an administrator may be able to see

• students working with concepts, relationships, evidence, or transfer rather than only recall
• teacher prompts that require justification and connection
• accurate disciplinary language and representations

What students might be doing

• analyze a pattern or relationship
• justify a claim or solution with disciplinary evidence
• transfer a concept to a new context

What students might be saying

• “The relationship changes when…”
• “This evidence is stronger because…”
• “I can apply the same principle in a different situation by…”

Artifacts that can make evidence concrete

• concept map, model, proof, claim-evidence-reasoning, or analytical annotation
• disciplinary vocabulary used in context
• student comparison of methods or interpretations

Weak evidence vs. stronger evidence

Common missed opportunities

• Concept Development is named in the lesson plan but no student behavior demonstrates it.
• The teacher can explain the intent, but the observer would have to infer too much because the evidence remains hidden.
• Only one student produces the evidence, so it is difficult to judge how broadly learning is occurring.
• The teacher collects information but the next instructional move does not respond to it.

Planning questions for Concept Development

1. At what exact moment should Concept Development become visible?
2. What should students be doing differently because this component is strong?
3. What student language would tell me the intended thinking is actually happening?
4. What artifact, response, or behavior can provide evidence beyond my own explanation?
5. What will I change if the evidence is weaker or stronger than expected?

Related CLASS components