Edushape Marbulous Marble Run Track Set 202 Pieces + 50 Marbles STEM Learning Toy, Educational Construction Building Blocks Toy for Kids 6 7 8 + Year Old Boys Girls with Clear Illustrated Instructions Ideal Marble Building Set Gift for Kids Age 6 + Year Old. Build various tracks and see marbles go up, down, all around, and fast! Various shapes, slides and tubes for lots of fun! Perfect introduction to marble runs with pieces that go together and pull apart with ease. The brightly colored chutes, drop-throughs and spinners stack and click together to create hours of engineering fun. Develop Patient and Problem-solving Skills. All parts must be connected correctly to make sure marbles pass through and arrive at the bottom. In the repeated assembly process, a child can gain basic knowledge and develop patient, problem-solving skill. Step-by-step Illustrated Instructions in Four Different Skills Levels. 8 solid bases including 3 large bases to collect the marbles for maximum stability! Mega Marble Run includes 202 track pieces + 50 glass marbles. Standard Toy Size Marbles (5/8 inch or smaller) work with this set. Compatible with all Edushape Marble Runs and more!