机译:7 to 13-year-old students? conceptual understanding of plant nutrition: should we be concerned about elementary teachers? instruction?
Univ Basque Country, UPV EHU SPAIN, Dept Didact Math & Expt Sci, Donostia San Sebastian, Spain;
Univ Basque Country, UPV EHU SPAIN, Fac Educ Bilbao, Dept Didact Math & Expt Sci, Donostia San Sebastian, Spain;
Plant nutrition; drawings; conceptual understanding; compulsory education; pre-service teachers;