And they are free. "Introduction to Trigonometry is where I teach people about the trig functions."

VOA: standard.2010.03.26

The Environmental Teach-In group began to educate people about how to take action locally and spread the news of the event.

VOA: special.2010.04.21

Often,their songs teach young people about human rights and fighting for their freedoms so they can have a better future.

VOA: special.2009.11.25

Also in Kenya, a video game is being tested as another way to teach young people to avoid H.I.V.

VOA: special.2009.03.16

Yet,some people say that you can never teach an old dog new tricks.

VOA: special.2010.05.30

DAM hopes to teach young people about their history and rights.

VOA: special.2009.11.25

She tried to teach Helen to live like other people.

VOA: special.2009.11.15

As part of the Ministry of Health's Door-to-Door Campaign, he goes to people's homes to teach them about malaria and how to protect themselves from the disease.

VOA: standard.2009.04.25