My middle two children--newly 3 & 5.5--love this set. They love to take them apart and to put them back together. Most importantly, they love to fight over just *WHOSE* set this is, each being certain it was gotten exclusively for them (I just have to laugh). There are enough blocks for them to share. With having multiple (young) children, I wish that there were more "easier" cards; however, since the set is marketed towards 5 & up (not 3 & up) that is probably on me and not on the product. I would love to see preschool level cards made, though (possibly even a bigger size cube for the little ones!). My 5y/o has enjoyed working through the cards for his "math." I would also love to see a dry erase marker included in the set, so it was all inclusive, since the cards are dry erase. My 5yo would love to try out some of the other sets (such as the dinosaur ones!) as well, so we are considering purchasing more sets. My children have always loved school, math, and learning, so this has not pushed them further towards that, but they do love math and they love to do their math with this. I think the themed ideas is cute, but this theme may not have been a favorite for my chlidren; however, for children struggling with math, perhaps it would help! I love the pinks & purples in the cubes that you don't typically see in number cubes.