Видео с ютуба Rasel Khan Academy

Rasel khan Academy is live!

Rasel khan Academy is live!

Polarization of light, linear and circular | Light waves | Physics | Khan Academy

Santa Sabina, Rome - Smarthistory/Khan Academy (x1.5 for Edpuzzle)

Khan Academy: School of the future

The Pantheon - Smarthistory/Khan Academy (x1.5 for Edpuzzle)

The Parthenon - Smarthistory/Khan Academy (x1.25)

Becoming Modern, an introduction – Smarthistory Khan Academy Read-along - Marsha Russell (x1.5)

The Colosseum - Smarthistory/Khan Academy (x1.5 for Edpuzzle)