I am also unable to recall my kids' days, but one thing I remembered is that I just trespassed leaving my KG room, into my brother's classroom who studied in the second grade and sat nearby him in the initial days of schooling. My brother scolded pushing me to get outside, however, the teacher who was so polite then, allowed me to sit and write the numbers on the slate as she is a math teacher. I still try to recollect that teacher's name and asked my brother too. He is not able to recall either.
Nowadays, while I visited the KG classes of my grandkids' school I have seen a play area for the kids for fun activities like a merry-go-round, toy horse-riding, clay modelling, etc. I feel this is the best way of entertaining toddlers to get used to the school environment at the pre-KG level. The school authorities can set up zig-zag learning types of numbers, alphabets, and language skills painted on the floors to hop, jump, or walk in a more easy, practical, and fun way for primary children, not restricted to writing/reading alone. Finally, I am completely against assignments/homework until primary classes. In the US, where my elder son is residing, education system up to 5th grade, is completely different. My grandson there, studying 4th grade, has not at all been given any homework while his Indian counterpart, my younger son's kid studying the same grade has homework and assignments burdening the kids and parents too much. I too sometimes help them with writing and reading to finish the homework. In my opinion, the education pattern still looks exhaustive for young children, and they are unable to go for any outdoor activities. Thanks to the fact that my younger son being a doctor is very particular in engaging his kids in any kind of sports or activity in which they are interested.