Line Graphs….How to Make them CONCRETE!!! What, What?!

My 6th graders are having a hard time with line graphs.  It's hard for them to plot ordered pairs, connect the dots and understand what they are looking at.  As I was sitting on the couch looking through some books, I came across an awesome idea....AND I LOVE IT!!!!The book is called Hands-On Math!  Ready to Use Games and Activities for Grades 4-8.  (Long title... I know......