In the kindergarten that kid use to read story to her class.
How I knew that when I was young in class 9th I use to read everyday and try to understand what is in there as my teacher after entering into the class start to ask questions about the topic she want to teach. No one could answer her questions it was only me who use to answer her questions. lol
That way I understood fully. Whatever I couldn't understand myself. I also use to explain to my friends as they can't understand. That way I learned that when we teach other we learn more.
I wasn't that genius but I used to work hard. When I reache Intermediate class as grade 11 and 12 I use to teach to my friends and also the studends who couldn't understand and my Lecturer use to send them to me let me explain to them and my teacher was so proud of me.