To view your child’s maps, navigate to “C:\Users\(their username)\AppData\Roaming\.min
ecraft\saves” and add the unzipped map folder to the \saves folder. AppData is, by default, a hidden file, so you need to change your settings to make it visible or manually add \AppData when looking at your user folder. Once the map folder is in the right place, all you need to do is open Minecraft and it will be listed as a world you can load!
For more information, visit http://minecraft.