Three things you should know:
1. . That's how humans evolved, argues Peter Gray, professor of psychology at Boston College. But our educational system stifles playfulness, and that can hamper kids' ability to learn.
2. . Professor Jim Davies thinks too many assignments are busy work, and young people should embark on more projects that matter.
3. , thanks to technology and a company called New Classrooms. Co-founders Joel Rose and Chris Rush explain why the ideal learning environment involves computers, personalized learning, AND group lessons.
And this week's music: