Instructional priorities
- Area between curves
- Slicing
- Disk and washer methods
- Shell method
- Arc length
- Surface area
- Method selection
- Units and reasonableness
Faculty planning and evidence
How do geometry, slicing, rotation, and metric formulas turn integral setup into defensible area, volume, length, and surface models?
Require method selection, exact notation, conditions, units, interpretation, and an independent verification. Score the reasoning chain, not only the final value.
Use retrieval diagnostics, smaller algebraic cases, multiple representations, worked-example fading, error comparison, and oral explanation before assigning more repetition.
Formative checks → pathway set → investigation → mastery check → correction → reassessment. Preserve both first-attempt and corrected evidence.