Nowadays they learn new things very early. Yining is in K2 this year and there was some discussion about using magnifying glass to start fire. The school didn’t do the practical, so geek Daddy will do it.
While doing it, I had to give the standard safety warning. No playing without adult supervision. Do not leave the magnifying glass lying around as it may start a fire and stuff. Doesn’t matter even if the kids don’t understand fully. They have good memory, they will come to figure it out as they progress.
So, our simple science experiment. Play fire. Lol!
And of course we didn’t forget to goof around with the magnifying glass.