8th grade math discussions. Are you looking for discussions for eighth grade math students to better understand 8th grade math topics? Your child may need some help with his or her eighth grade math class. Or you may be looking for 8th grade math resources for your students. TuLyn is the right place. Learning eighth grade math is now easier. We have hundreds of discussions for 8th grade math students to practice. This page lists discussion topics on eighth grade math. You can navigate through these pages to locate our 8th grade math discussions.