Fetal-pig dissection defense
This is a live oral exam conducted over a real specimen. The guide hands you a probe and asks you to find structures, name them, and explain what they do — then follows up with questions you cannot rehearse for. There is no worksheet to copy and no answer to look up: you stand at the tray and defend your understanding out loud.
| Criterion | Developing | Proficient | Mastery |
|---|---|---|---|
| Location & identification | Cannot find named structures on the specimen. | Finds most structures with hints. | Locates and names structures on the real specimen unaided. |
| Structure–function reasoning | Names parts but not their roles. | Gives function but not why the form fits it. | Explains why each structure's form suits its function. |
| Holding up under questioning | Folds at the first follow-up. | Answers some follow-ups, falters on others. | Handles unrehearsed follow-ups with sound reasoning. |
| Dissection technique & care | Damages structures or works unsafely. | Adequate cuts; some carelessness or waste. | Clean, deliberate cuts that preserve structures and safety. |
| Use of correct terminology | Relies on informal or wrong terms. | Mixes correct and casual terms. | Uses precise anatomical terminology throughout. |
Integration is reported separately and cannot lower the science grade or block a science demonstration pass. Science and practical criteria determine that pass. Before assessment, publish the target list, task, permitted references, timing, and accommodations. Assess scientific reasoning and safe technique, not confidence or speaking speed.
Approved routes. A student may opt out of dissection and take an equivalent image-based, virtual, or model route without penalty. Location and identification, structure–function reasoning, follow-up questions, and terminology can be mastered on any approved route; dissection technique and care is credited only when an educator observes the hands-on technique. The record states which route the student took.
“This is the diaphragm — it separates the chest from the abdomen, so that’s how I know we’ve crossed into the thoracic cavity. I traced this vessel straight from the heart, so it’s the aorta, not the vena cava, because it’s carrying blood away.”
“That’s a lung, I think. There’s a tube there but I’m not sure what it connects to. We just followed the diagram.”
This assessment is built around the student’s own work: it happens at the tray, over a real specimen, in real time. No format makes hidden help impossible; the guide’s observation and follow-up questions still matter. Mastery is shown by doing and defending — not by submitting.