TY  - RPRT
TI  - Early science instruction: addressing fundamental issues.
AU  - David Klahr
PY  - 2005
DO  - 10.1111/j.1467-9280.2005.01629.x
UR  - https://pubmed.ncbi.nlm.nih.gov/16262772/
ID  - 16262772
ER  -