What's the Play Smart secret? Learning should be fun Gakken's Play Smart workbooks and classes have been helping children from ages 2-5 to develop important skills for more than 30 years in Japan. Now this unique, tried-and-true creative learning system is available in North America. Play Smart Vehicle Picture Puzzlers 3+ is packed with 70 fun-first, thoroughly engaging, vehicle-based activities designed to enhance reasoning, problem-solving,...