I can play in the playground

I can play in the playground. But  I couldn't do it when i was a baby. I couldn't do it.
I can play video game but I couldn't do it when I was a baby.
I like to chew on a pencil when i was a baby but i don't want to do it now.
I want to sharpen a pencil.
I can't read when I was a baby but now I can.
I can do all kind of things right now because my dad, my mom, my coach and my teacher taught me how to do it.