Here is me when I was about the boys' age. My Dad built that slide in our backyard.
You can see what passed for "trees" where I grew up, in western Labrador. I remember being bewildered by the trees in our storybooks that looked so different from season to season. Our trees looked the same all year long... except sometimes they would have snow on them. I remember having to memorize which tree went with which season to get it right on science tests.
PS I'd love to read other people's flashbacks - let me know if you post one!