Climate difference

I was going through ideas of what to teach the little kids this weekend and thought about having them make a poster split into four parts--one for each season.  So I started imagining what kind of cheap things they could put on the poster for each season (leaves, flowers, etc) until I wondered what they would use for snow.  At that point I realized that they don't have seasons quite like I'm used to, and quickly moved on to other ideas.  Maybe some other time I can teach them about the North Dakota seasons.