Hard-to-teach science concepts : a framework to support learners, grades 3-5
Source:National Science Teachers Association, Arlington, Va., p.256 (2011)
Call Number:Cubb LB1585 .K63 2011
Keywords:Science--Study and teaching (Primary)
"The four hard-to-teach concepts examined are the flow of matter and energy in ecosystems (life science); matter and its transformations and understanding changes in motion (physical science); and Earth's shape and gravity (Earth and space science)."