This Diy Marble Run Building Blocks Set Is The Perfect Way For Kids To Learn And Have Fun At The Same Time! With 65 Pieces To Choose From, Kids Can Build Their Own Unique Marble Runs And Watch Their Marbles Race Through. The Variable Slide Track Allows Kids To Create Different Paths For Their Marbles To Take, And The Compatible Big Bricks Are Easy For Little Hands To Build With. This Marble Run Set Is Also A Great Stem Educational Toy. It Helps Kids To Develop Their Problemsolving Skills, Creativity, And Fine Motor Skills. As Kids Build Their Own Marble Runs, They Have To Think About How To Put The Pieces Together To Create A Working Track. They Also Have To Experiment With Different Designs To See Which Ones Work Best. This Marble Run Set Is Perfect For Kids Of All Ages. It'S A Great Way To Keep Kids Entertained And Engaged, And It'S Also A Great Way To Help Them Learn.