"Aligning SequencesSequentially and Concurrently," an educational computational science module by the authors and available online, develops a sequential algorithm to determine the highest similarity score and the alignments that yield this score for two DNA sequences. Moreover, the module considers several approaches to parallelization and speedup. Besides a serial implementation in C, a parallel program in C/MPI is available. This paper describes the module and details experiences using the material in a bioinformatics course at University "Magna Graecia" of Catanzaro, Italy. Besides being appropriate for such a course, the module can provide a meaningful application for a high performance computing or a data structures class.