TY  - RPRT
TI  - What's the active ingredient in active learning?
AU  - Geoff Norman
PY  - 2004
DO  - 10.1023/b:ahse.0000012341.66551.8b
UR  - https://pubmed.ncbi.nlm.nih.gov/14983855/
ID  - 14983855
ER  -