― Description : ∙ A new smartphone app, RubberBand, was featured in a New Scientist teaser piece this month. The article details the new app as a tool to help teachers keep track of kindergarteners. The app works by tracking children that stray from a group. If you have ever been to a museum you can probably appreciate the kind of fear that a teacher in charge of dozens encounters. If a child just moves past a wall at an exhibit, they are then out of sight. ∙ Following one child [...].