Purchased this for my 3rd and 4th grade students. Pros: The cards are sturdy and the size of a regular deck of cards. Colors are vibrant and they have a nice glossy sheen on both sides. The game is played much like Bingo but you don't have to mess with a zillion little place markers. A fun way to practice math facts. Cons: I am a little confused as to how/why the decks were arranged in the manner they are. There are 3 decks (purple, red and green). I assumed that the decks would be arranged so that the easy deck covered facts from the 1x, 2x, 3x and 4x tables, the middle deck being 5x through 8x tables and the most difficult 9x - 12x. No, that is not the case. The purple deck (when sorted by the lowest factor) has a majority of 1x through 4x. The remainder are random cards and some are represented twice; 6 x 7, 8 x 8, 10 x 8, 11 x 8, 6 x 9, 9 x 9, and 10 x 5. The red deck seems to have no rhyme or reason, but there are not any x 12 facts. The green deck has 8x - 12x tables, the majority being in the 11 and 12 tables. The random cards are 7 x 8 (twice), 5 x 8 (twice), 9 x 5 (twice), 9 x 7 (twice), 8 x 9, 10 x 6, 10 x 8 (twice), 10 x 9 (twice). The box could be sturdier, I can tell this will not last.