Learning numbers and basic math has never been this much fun. Thiscolorful set of math puzzle cards provides children with an excellentintroduction to number recognition, counting and basic addition andsubtraction. The 30 puzzle cards feature 10 cards of counting, 10 cardsof addition, and 10 cards of subtraction. The puzzles areself-correcting - only cards with the correct answer will fit together.A fun way to learn basic mathematics. Recommended for ages three andup. Bilingual English/Spanish and English/French packaging.