Two distinct student groups, in terms of academic performance, were identified early in the semester as either being under-performing students or over-performing students using an online homework system. The students who are identified as under-performing received, on average, lower grades than their fellow students but spent more time completing…

Many students are deterred from science because of the way science courses are packaged. To find out what makes science hard for intelligent students, the author employed nonscience faculty and graduate students as surrogate students in science. Their responses to the sequence of the units, demonstrations, homework assignments, examinations, and…