TY  - BOOK
AU  - Tweed,Anne
TI  - Designing effective science instruction
SN  - 9781935155065
U1  - 507.1 
PY  - 2009///
CY  - Arlington, Va.
PB  - NSTA Press, NSTA Press, National Science Teachers Association/McREL
KW  - Science
KW  - Curriculum planning
ER  -