Created the desktop and pi images for Kids on computers. The year before, they had set up a lab but did not know how to truncate an image and needed to find and purchase larger SD cards in Mexico.
At the time I was working remotely for Arizona State University as a consultant. Here is the article with more info:
This time, I showed the developer in Oaxaca and others how to truncate the image. The instructions are found here on Hackster.