New reforms in science education call for three-dimensional learning by integrating disciplinary core ideas, science and engineering practices, and "crosscutting concepts" (CCCs). These reforms defined the new term, crosscutting concept (CCC), as a lens that has explanatory power across disciplines. To describe how researchers are…

The forecast for the first quarter of this century is that the issue of teaching science in the language to which the learner is most familiar will receive more attention in our quest to win more students for science. Over two-thirds of countries in Africa, Asia, and Europe have developed policies on the use of the mother tongue for teaching…