Designing a Curriculum-Aligned Assessment of Cumulative Learning about Marine Primary Production to Improve an Undergraduate Marine Sciences Program.

We developed an assessment to track changes in understanding about marine primary production, a key concept taught across our undergraduate curriculum. Question content was informed by investigating student misunderstandings, conducting faculty interviews, and mapping primary production concepts to the curriculum. Content questions were paired with questions asking students how confident they were in their answers. Although students gained knowledge of marine primary production across educational levels, confidence data and item analysis indicated student misunderstandings on several concepts. Many students had difficulty on questions that required interpreting graphs or other higher-order thinking skills. The results set the stage for additional focused assessment and curriculum revision, and the questions may be useful in developing a large-scale, interdisciplinary marine sciences concept inventory.