Experts say one of the lessons is that even though the economy has improved, it demands more attention.

VOA: special.2010.01.23

One of the lessons Mosee learned early on was the value of an education.

VOA: standard.2009.12.04

(Speech) Ping said one of the lessons learned is that the world is paying for "the irresponsible and lax behavior" of large financial companies whose philosophy was to make short-term profits.

VOA: standard.2009.11.08

"One of the lessons is about diarrhea. Diarrhea is about quality of education because it's relevant, because the child would learn in the school about diarrhea and will go tell the mother.

VOA: standard.2010.05.19