Many students have some difficulty with calculations. Simple dimensional analysis provides a systematic means of checking for errors and inconsistencies and for developing both new insight and new relationships between variables. Teaching dimensional analysis at even the most basic level strengthens the insight and confidence of students, and…

Science requires imagination nourished by knowledge, experience and sustained critical thinking. Science teaching has the same requirements, but metacognition is even more important to a teacher than it is to a practitoner of science. Critical thinking is essential to both science and science teaching: in either domain, imagination relies on…