As instructors return to in-person teaching and learning following online teaching during the COVID-19 pandemic, we can build from the experiences gained and incorporate various online resources into our campus-based classes. Drawing from student evaluations of teaching, a post-course student survey and learning management system (LMS) analytics, we documented students' perspectives of online teaching and learning in a large introductory science course offered as a flipped classroom, and reflect on student and instructor perspectives as we return to campus-based teaching and learning. Results suggest that what students liked and what they perceived as effective often did not align, and that instructors need to consider good pedagogical practice when evaluating student comments. We identified strategies that we can carry forward to enhance our large introductory science course including a weekly course structure, synchronous classes and laboratories supported by asynchronous content, and taking advantage of recent advancements in online teaching and learning tools for discussion forums, practice exams and assessment.