I purchased this at a bookstore and have used it a few times. I bought it just before my child turned 3, and they were able to do it relatively quickly. Because of this, I also quickly purchased the Tangram for ages 3 and up, which we are currently using. We didn't use this for a long time, and the frequency of use was low, so the board has no stains or tears, and the blocks are clean. Educational toys are relatively expensive, so how about it for those considering a purchase who don't mind minor details? (^^) Shipping costs are quite high, so I'm sorry, but please refrain from price negotiations. #KUMON #EducationalToys #BuildingBlocks #Puzzle #TriangleTangram #Tangram #Ages2AndUp #Fingertips #FingertipPlay #Present #Birthday #Christmas