What We Can Learn from a Bad Day of Teaching. We’ve all been in the classroom when our lessons flop, our students get restless, and we feel like captains of a sinking ship. Jena Lynch claims that all teachers have bad days, but the best teachers are the ones who can learn from their mistakes. She will reflect on a bad teaching day and what she learned from it. You are encouraged to take a reflective approach to your own teaching for your students’ benefit and for your professional development.