I am selling a duplicate Pythagoras set that I received as a gift. I purchased it in December 2025 at Toys "R" Us, and it is new, unused, and unopened. Pythagoras Educational Fun! Ball Coaster Sound Blocks Puzzle Large Study Educational Thinking Learning Preschool Set Sound 1.5 years old Create Growth Inspiration Toy Children Kids Educational Study 1 year 5 months A ball coaster that fosters creativity using magnetic blocks. - Brand: Pythagoras - Product Name: Ball Coaster - Target Age: 1 year and older - Features: Magnetic blocks - Number of Parts: 15 or more - How to Play: Assemble the course and roll the balls