TY  - BOOK
AU  - Ebert,Christine
AU  - Ebert,Edward S.
TI  - The natural investigator: a constructivist approach to teaching elementary and middle school science 
SN  - 0534129129
U1  - 372.3 22
PY  - 2000///].
CY  - Usa: 
PB  - Wodsworth, 
KW  - Elementary education
KW  - Teaching science
KW  - Εκπαίδευση
N1  - Inludes bibliographical references and index
ER  -