I’ve been having a blast asking students to try to make sense of how to graph equations on strangely labelled coordinate systems. Here’s the poster I presented at the 2017 National Association for Gifted Children conference.
Here’s a classroom-ready handout to get things rolling with your students, as well as associated solutions. This handout is based on Exploration 1 from the poster–to take students a bit further, check out Exploration 2!