Some students have difficulty mastering the zoom pinch gesture on an iPad. I created a solution to provide practice and motivation with a simple 3D printed device. It reveals a small picture when you slide the two squares apart, which has been motivating for an energetic student with low vision who needed a more tactile approach to practicing the ever important zoom pinch gesture for the iPad. It works best with multiple picture sheets underneath to surprise and motivate students.
Watch this video to see how it works.
This device is now posted on Tinkercad, so you can make your own!