Instruct: Classify Amazon reviews into positive or negative sentiment
Query: So simple and yet challenging, educational and FUN!

I am a first grade teacher, and I am crazy about this game. I have to admit that when I first saw the commercial for these, I was perplexed. Cups? It's just stacking cups? But then my own kids started raving about how they had used them in PE and how much fun they were. So, I used some of my supply money to purchase two sets for my first grade class and WOW! What a hit! I bought a set for each of my own kids (9 & 12) and we've all had a blast with them! I would so much rather see them playing with these than with the video games and they like these as well or better! BTW, The Sport Stacking web site has a number of studies on the benefits of this activity.