TY  - BOOK
AU  - Martin,David Jerner
ED  - Wadsworth/Thomson Learning
TI  - Elementary science methods: a constructivist approach 
SN  - 0534556493
U1  - 372.35 23
PY  - 2003///.
CY  - Belmont: 
PB  - Thomson/Wadsworth, 
KW  - Science
KW  - Study and teaching (Elementary)
KW  - United States
KW  - Constructivism (Education)
N1  - Includes bibliographical references and index
ER  -