03:01 Measurement How taking a bath led to Archimedes’ Principle lesson duration 03:01 1,320,871 views
04:02 Motivation and Emotion How two decisions led me to Olympic glory lesson duration 04:02 100,600 views
01:53 Earth and Space Science ¿Qué es una estrella? - Eduardo Rubio lesson duration 01:53 93,042 views