2 Pcs Kids Mathematics Numbers Magic Cube Digital Brain Teaser Puzzles Intelligence Game Toy Can add, subtract, multiply, divide, size comparison operations, can let children practice, can also be used by the parent test questions, learning in the entertainment, received the wasted effort effect! A fun way to play, learn & grow BECAUSE LEARNING WAS MEANT TO BE FUN! Stimulate Babys Endless Creative and Amazing Structures. Size: 7*5.5cm, Suit for 3-14 years baby. Helps to Develop Baby's Observation Ability and Hand-eye Coordination. Fast Delivery and Money Back Quality Guarantee. Pls be sure that you buy from seller "Easykan", Only this buyer can offer 60 days refund and resend guarantee with no excuse.