Welcome to the New Metric System

John D. Mays Chemistry, Experiments, News, Physics, Teacher Resource

Many upper-school science teachers are aware that last year (2019) a substantial revision to the SI unit system, commonly known in the US as the metric system, went into effect. If you are not aware that the SI system underwent a significant revision, you should be. The revision completely changed the definitions of four of the seven SI base units …

physics chemistry biology written in printer's letters

A Brief History of the B-C-P Sequence

Jeffrey Allen Mays Biology, Chemistry, Physics, Teacher Resource

Biology. Chemistry. Physics. It is by far the most common sequence of science courses in high schools, and has been the default program in American high school education for several decades. But the B-C-P sequence has been the subject of criticism from many educators and scientists for over a century. In our time when science scores and aptitude are in decline nationwide, …