Throughout my dozen years spent teaching, I have designed some terrible assignments. Early on, I took the disastrous results of my experimentation personally. I now realize failure is just part of the job. … Happily, sometimes spectacular blunders lead to serendipitous results, and so I hope to keep failing, repeatedly, in the years to come.
— Richard E. Bond, whose recent Perspectives article offers some excellent reflections on how to use “failed” assignments as opportunities to improve teaching