I stumbled on the NGSS topic while searching for STEM Standards. There are *thousands of words* in the recently-released NGSS, but they contain almost no units of measurement, either SI units or units outside the SI. The sponsors, however, the NRC, NSTA, and the AAAS are of good repute.
In one section, the statement is made "... in order to identify something as bigger or smaller than something else - and how much bigger or smaller - a student must appreciate the units used to measure it ..." No units are mentioned, except nearby, the question is asked "Is it bigger than a bread box?" What do you think of the NGSS as a Standard for education of children K-12? How can science, engineering, and technology be taught without incorporating units of measurement? Has the NGSS deliberated evaded the question of SI as the preferred Standard for Units of Measurement in the US? Eugene Mechtly
