This was a response to the design competition for the IDC (Interaction Design for Children) 2016 conference. 

This VERY high-level concept is about a way for children to use material sensors to learn about the world around them; where the materials that make up the world come from, what goes into making them, and where they go when we're done with them. Interestingly, all of the technologies for this temporary tattoo- style wearable currently exist, even if they aren't affordable or practical yet. See the paper for more details!

he Paper: The Story of Things: Awareness through Happenstance Interaction