Play is in crisis with today’s children lacking adequate time and space for real play. Many spend too much time in scheduled and solitary screen-based activities. Two thirds of parents report that their children have less opportunities to play than they did as a child. Yet, research shows that play is vital to a child’s development. It develops the skills necessary to tackle humanity’s future, such as emotional intelligence, creativity and problem solving.

Unilever, the LEGO Foundation and IKEA Group, in partnership with National Geographic, formed The Real Play Coalition to change behavior and get kids to spend less time staring at screens and more time playing in the real world.

However, the conversation around digital addiction has grown convoluted and confusing with too many messages and too many experts. The Coalition needed a simple, powerful reminder about the power of real play in the development of creative thinking. So we enlisted the help of one of the world’s greatest and most playful minds – Albert Einstein. The team discovered (and dusted off) his own toy building blocks from 1883. Einstein’s blocks!

We wanted to get those blocks in the hands of children all over the world. But how? Technology gave us the answer: We could scan those blocks for 3D printing. In fact, 3D printing toys is one of the largest growth markets for 3D printing. And 3D printing is increasingly being used in secondary schools, and even some primary schools. The team painstakingly scanned all 160 of Albert Einstein’s original toy blocks.

All we needed was a platform to deliver Einstein’s blocks. We built one. We created a website, OpenEinstein.com, to make them available for anyone, open source, anywhere in the world, to 3D print and play, for free. And to ensure kids actually got them, we provided schools around the world with a complete set!

The Real Play Coalition and OpenEinstein.com launched at the World Economic Forum in Davos, Switzerland. We got our three high profile CEOs — Unilever’s Paul Polman, LEGO Foundation’s John Goodwin and IKEA Group’s Jesper Brodin — to raise awareness for the play crisis, the need to prioritize play globally, and Einstein’s blocks.