Because a lot of kids are just in school kind of puzzled as why they're there.

If you can explain the why of things then that makes a huge difference to peoples motivation. Then they understand purpose. And just make it entertaining.

A statement by Elon Musk, in an interview with Sal Khan, about what's important in a modern education system. Video lecture sites such as Khan Academy grow in popularity and enable educators to flip their classroom. This means that students receive an instructional video to view online as homework, while problem solving or other hands-on work takes place in the classroom. The flipped classroom approach offers a practical solution to the universal question: In the information age, how do you teach students to think for themselves when so many answers are just a Google search away?