With 48 wooden pieces (including nuts, bolts, drilled bars to connect and a child-size screwdriver), this classic building set gives kids all they need to tinker and build. Printed right on the sturdy storage box are building plans for a crane, motorcycle, airplane and race car to get the fun started. With some imagination and a few creative twists and turns, kids can make hundreds more amazing structures too. Any time kids play with this durable set, they'll be building fine motor skills, problem-solving skills and hand-eye coordination. Included extension activities guide parents to educational activities that also build early math skills.