https://www.kaltura.com/index.php/extwidget/preview/partner_id/351361/uiconf_id/11975631/entry_id/1_x94e9n4q/embed/auto?&flashvars[streamerType]=auto
https://www.khanacademy.org/economics-finance-domain/core-finance/interest-tutorial/present-value/v/introduction-to-present-value?playlist=Finance
https://www.khanacademy.org/economics-finance-domain/core-finance/interest-tutorial/present-value/v/present-value-2?playlist=Finance
https://www.khanacademy.org/economics-finance-domain/core-finance/interest-tutorial/present-value/v/present-value-3?playlist=Finance
https://rasmussen.webex.com/rasmussen/ldr.php?RCID=1312af7c2107b9a6447fdaebb2428488
