The recommendations in the sections on "Measurement and Data" for all eight grades in the "new" Common Core State Standards mix "buggy whip units" with SI Units without preference for SI Units of Measurement in spite of federal public laws declaring the preference for SI Units of Measurement for trade and commerce in the US.
Can this confusion explain the fact that youths from other countries perform better on tests of science and mathematics? As Jim has noted, at least emphasis is on *measurements* rather than on conversions of units of measurement. Eugene Mechtly
