The Match It series features a wide range of award-winning educational titles. Each product in the series features a set of self-correcting puzzle pairs that introduce children to a specific educational topic or skill. The brightly illustrated puzzle cards engage children in the learning process in an entertaining way. Match It. games are a terrific learning tool for everyone. Match It. Opposites includes 30 self-correcting puzzle pairs. Ages 3 plus years.Features: 30 two-piece self-correcting puzzle cardsIntroduces the concept of oppositesEncourages critical reasoningDevelops problem solving skillsBuilds self confidenceMaterials:Cardboard