3 ms·
Camtasia and Smoothdraw http://www.khanacademy.org/about/faq#equipment http://www.khanacademy.org/about/faq#equipment
by leak 15y ago
Camtasia and Smoothdraw http://www.khanacademy.org/about/faq#equipment http://www.khanacademy.org/about/faq#equipment