Are you looking for a quick way to assess your students' mastery of double line graphs? Here it is! This can be used to practice creating double line graphs or to determine previous learning. It is ready to go! I would use it in all middle school grades maybe even lower if students are ready! This activity could also be changed to practice double bar graphs, if you want to extend the learning. It could also be used for substitute work in upper grades. It is a great way to teach creating graphs in EXCEL.
I've been teaching mathematics, international studies, and media design since 1998 in an urban district located in the southeast region of the USA. Before becoming a teacher, I worked as an electrical engineer for several years.