Teaching critical thinking in nutritional sciences: a model course and assignments

Critical thinking is a common and important learning outcome in college curricula. Case-based and problem-based learning can be used to assess and foster critical thinking skills. HNF 250-Contemporary Issues in Human Nutrition is a critical thinking course developed during the redesign of a nutritional sciences major program. Course assignments were designed to assess the course and nutritional sciences major learning outcomes. The nutrition and health claim assignment is scaffolded across the academic semester as three assignments: 1) bibliography assignment; 2) poster presentation; and 3) paper. Course lectures and materials have been designed to prepare students for completion of each assignment. The assignments have been modified over time based on classroom observations and student performance. In 2021, the course learning outcomes were examined by assessing several assignments including the nutrition and health claim poster and paper. Course learning outcome benchmarks using these assessments generally included 80% of students achieving an 80% for each criterion. Results revealed that students were not meeting most of these assessment benchmarks during the 2021 iteration, although benchmark data from other course assessments were more satisfactory. It is possible that the transition from a virtual to an in-person format negatively influenced student performance on these course learning outcomes. This course and the nutrition and health claim assignment example can provide a course design and learning outcome assessment framework for other higher education critical thinking courses. NEW & NOTEWORTHY This paper describes how a scaffolded nutrition and health claim assignment is used to teach critical thinking skills among nutritional sciences students and examine the program's learning outcomes. Further, this course example is to serve as an model for STEM majors on how to incorporate case-based and problem-based learning strategies into an undergraduate course.