Since we were born and as we grow our family, our family has taught us how to identify our gender by choosing girl stuff if we are girls or boys things if we are boys. Still, we are so little to understand why we should take only some stuff that changes when we are in the real world around more people of the same age. We see how adults make differences between all of them. When I was aware that gender was significant, I had about three years old. We were at church with all the kids, and the adults started making teams, some with only girls and others with only boys.