Don't discuss in a boring or plain manner. Have some fun while teaching it since that's pretty much a complicated topic. Like doing some games such as picking representatives from groups and letting them answer by taking turns in writing an answer in the board to make them active and so that they too will learn! Or make them watch a movie or video clip regarding that topic in an animated way especially if there are otakus in the class
Use real life examples like "The ratio of girl students to boy students in your section is (blablabla)" and stuff like that. Use trivias specially for smart young students that love new info.