Item in as new condition. Some items may be carefully resealed for protection only. Relax Play and Improve your mind. Challenge Me Maths Workout with its extended gameplay and variety of features gives you the chance to test yourself while having fun. Guaranteed to stimulate and surprise with hours of gameplay to keep you entertained Challenge Me Maths Workout is a relaxing and entertaining way to keep your mind challenged and stimulated.Incorporating two number puzzle games Challenge Me Maths Workout will not only bring you hours of fun and relaxation it may also improve your Maths skills.Hidden Logic In Hidden Logic you must guess the value of your opponents cards whilst stopping them from guessing yours. Initially the cards are facedown on the Nintendo DS screen - a correct guess (from 1-11) will reveal the card. Play to reveal all of your opponents cards before they reveal yours Formulate Formulate is a numbers game that uses equations and cards to formulate answers. Each card numbered 1-9 is also associated with a mathematical symbol such as - x or . You must move the cards around the screen to create a correct formula. Formulate is a great way to sharpen up your arithmetic skills while relaxing at home or battling the hordes on the tube or bus