Maybe It’s Time for a Diorama

Back in my youth, when it was fashionable, if insensitive, to celebrate Christmas unabashedly in public elementary schools, a good part of the curriculum and instruction after Thanksgiving was devoted to holiday activities. There was practicing for the Christmas “pageant” (music), making a Christmas ornament or a gift for Mom (art), and Christmas-themed writing, spelling,Continue reading “Maybe It’s Time for a Diorama”

Another Nice Mess You’ve Gotten Me Into

Things change. It’s inevitable. Sometimes the changes are big, sudden, and can’t be missed. Sometimes they are much more subtle, occurring gradually over a long period of time. Some changes are deliberately planned, years and “steps” in advance: first we’ll change A, then B, then C. Some changes are the unintended consequence of another change:Continue reading “Another Nice Mess You’ve Gotten Me Into”

Vive La Variance!

To educate is to change. Instruction and learning are about change. Educational measurement is defined by variance. Literally. The fundamental concepts in the field are expressed in terms of variance. One of the first techniques that we learn as eager young graduate students is analysis of variance. Without variance, our lives as psychometricians, much likeContinue reading “Vive La Variance!”