Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Pieces don't hold together

I got this puzzle hoping to get some education play time with my kids - 3 and 8 year old. While the idea of this puzzle is wonderfull, the product itself not that much. The puzzle pieces look pretty durable but a big issue for us - they don't interlock together like regular puzzles. Instead, you just put them close. Manufacturer probably believed a kid would never bump into a puzzle or wiggle around. We pretty much end up always straightening up the pieces over and over and it's not much fun after all. But I do love the idea of learning about United States this way.