CRISPR/Cas-9 is frequently mentioned in mass media and on the web, so it is one of the many terms that the readers can notice, though they are novice to related fields. CRISPR/Cas-9 is not an appropriate difficult term to be included in elementary school science education contents. However, when considering the contents of elementary school science curriculum, as genetic engineering which is difficult to understand has been adapted through reading materials. Therefore elementary school teachers have minimum knowledge on CRISPR/Cas-9 for communicating with their students. In this study, strategies were proposed for explaining the contents of CRIPR/Cas-9 that can be used in elementary schools, focusing on those that can easily be seen on the media or on the web. Ethical view point of CRISPR/Cas-9 teaching strategy was also proposed.