In this study, we developed teaching materials for learning the methods of taxonomy and phylogeny, using coniferous trees of the family Cupressaceae. Seven species of Cupressaceae—which are readily available and easy to identify based on leaf morphology—were selected as teaching materials. After presenting an example of classification based on leaf morphology, we introduced a method for phylogenetic analysis of Cupressaceae using DNA sequences registered in the DNA database. By integrating the results of morphological observation and molecular phylogenetic analysis, learners can recognize taxonomic groups based on phylogenetic relationships and consider the process of morphological evolution.