Common Core seeks to remedy this issue by introducing fewer topics with a variety of conceptual challenges appropriate for each student in every grade level. (edimprovement.org)
But for me, the biggest conceptual challenge I have with moving into an administrative role is that I wouldn't be working hands - on with kids every day. (newyorkschooltalk.org)
Our knowledge base, however, is insufficient to quantify the effects of climate change on many of these metrics because of conceptual challenges posed by climate change to standard assumptions, as well as practical data and methodological hurdles; insufficient understanding of how such metrics capture the way people actually feel; and, for non-monetized values, sometimes resistance to calculating them at all (Sussman et al 2014, Neumann and Strzepek 2014). (environmentalresearchweb.org)