Okay kiddo, do you know what a tablet is? It's like a big phone that you can use to play games, watch videos, and do other fun things. The Nexus 7 is a specific type of tablet made by a company called Google.
The 2012 version is an older model of the tablet that was released in the year 2012. It is different from newer models like the Nexus 7 (2013 version) or the Pixel C.
The Nexus 7 (2012 version) has a 7-inch screen, which is smaller than some other tablets. It also has a camera so you can take pictures and videos.
One cool thing about the Nexus 7 (2012 version) is that it was made to work really well with something called Google Play. That's where you can download lots of different apps like games, music, and even books.
Overall, the Nexus 7 (2012 version) is an older but still popular tablet that can be lots of fun to use, especially if you like playing games or watching videos on a portable device.