When I failed a big test, I was really down. But my teacher didn't scold me. Instead, she sat with me and we went through all the questions I got wrong. She patiently explained where I went wrong and how to improve. She then gave me extra study materials and set up a study plan for me. Thanks to her, I aced the next test and it was a huge confidence boost for me.
Once, my teacher took us on an impromptu field trip to a local museum. We were studying history at the time, and seeing the actual artifacts and exhibits made the lessons come alive. It was an amazing experience as we got to touch some of the replicas and ask the museum guides questions that our teacher couldn't answer. It really broadened our understanding of the subject.