A little bit of not high-end technology can make making sand very interesting.
what I want to enjoy today is an augmented reality sandboxie. It uses all the ordinary sand in the bunker, but it looks a lot more fun:
this is actually an interactive toy for teaching, which can help students understand surveying and mapping and the concept of various topographic maps in a more interesting way. Through projection, contours can be projected on the bunker in real time, rivers can be shown, and even eruptive volcanic effects can be added.
the system was first developed by researchers at the University of California, Davis, and this demonstration video was filmed at the University of Los Angeles. There is no particularly cutting-edge technology used here. Sand is the most common sand, and the whole set of equipment is made up of ready-made parts. The shape change of the sand is detected by a Xbox Kinect sensor and then processed by open source software to generate a colored contour map projected onto the surface of the sand pile. They hope that such relatively low-threshold but interesting teaching aids can be used in the classroom.
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after reading, I can't help but recall the days when I drew a contour map in geography class. This looks really much more fun than a textbook. Source: http://newsroom.ucla.edu/stories/make-it-rain-ucla-unveils-augmented-reality-teaching-sandbox