What type of friend are you? Evergreen, Wallflower, Butterfly, or Firefly? If you’re not sure—and if you’re puzzled by how those categories are defined—then you can find out by taking this quiz ...

Learners should be tested as they learn. I believe that. But I don’t typically give daily, or even frequent, quizzes in my classes. Why? Cowardice and hypocrisy, basically: The one time I did daily ...