In a Food Processing-Unit Operations course, students learn the basic equipment that comprises unit operations and techniques commonly used in the food industry to prepare, process, and preserve a variety of food products. Due to the complexity of these operations, students frequently struggle with applying food processing principles to predict how unit operations influence the physical, biochemical, sensory, and nutritional properties of foods. This study is designed to evaluate how pre-class readings and in-class group activities improve the students' learning in a Food Processing course. The survey after the exams shows that 48 and 60% of students agree that reading assignments and in-class group activities help them understand the course material better, respectively. The mean value of exam scores shows that the students in the intervention section (Spring 2018) had significantly higher scores (88.4%) than that of the two previous sections without intervention (77.6%, Spring 2016 and 82.8%, Spring 2017) (P < 0.05). It is concluded that using a flipped class element like providing reading assignments and quizzes before the lecture can be an effective preparation technique for students as well as providing the instructors with critical insight into the students' level of understanding before the lecture. This allows the instructor to focus time spent in class on areas in which students struggle the most.