Bridge%20the%20gap%20with%20the%20%26quot%3BGraviTrax%20Bridges%20Expansion%26quot%3B%20set%20and%20keep%20your%20marble%20run%20rolling!Explore%20the%20possibilities%20of%20connecting%20separate%20tracks%20with%20the%20%26quot%3BGraviTrax%20Bridges%20Expansion%26quot%3B%20set%20and%20get%20your%20marble%20over%20any%20ravine!%20Balance%20your%20marble%20on%20the%20narrow%20bridge%20that%20resembles%20a%20tight%20rope%3B%20control%20the%20marble’s%20speed%20with%20the%20slow%20bridge%3B%20or%20roll%20out%20a%20new%20path%20for%20your%20marble%20to%20take%20with%20the%20roll-out%20bridge.%20It’s%20a%20snap%20to%20combine%20this%20accessory%20with%20any%20%26quot%3BGraviTrax%20Starter-Set%26quot%3B%20to%20experience%20the%20power%20of%20gravity%20and%20educational%20fun%20today!What%20makes%20a%20great%20toy%3F%20GraviTrax%20checks%20all%20the%20boxes!%20It’s%20a%20creative%2C%20modular%2C%20expandable%20track%20system%20that%20challenges%20children%20to%20use%20their%20imagination%20to%20design%20and%20build%20their%20own%20marble%20runs!%20Electronic-free%2C%20GraviTrax%20construction%20sets%20use%20STEM-friendly%20concepts%20while%20building%20critical%20thinking%20and%20problem-solving%20skills.%20Completely%20open-ended%2C%20every%20GraviTrax%20set%20has%20a%20boredom-busting%20variety%20of%20play%20options%20for%20hours%20of%20fascinating%20fun.%20Once%20the%20basics%20are%20mastered%2C%20simply%20add%20expansion%20sets%20and%20accessories%20to%20propel%20those%20metal%20marbles%20around%20the%20tricked-out%20track%20of%20your%20dreams!Comes%20complete%20with%203%20adjustable-length%20Bridges%2C%202%20long%20thin%20tracks%2C%202%20long%20slow%20tracks%2C%201%20long%20track%2C%202%20medium%20tracks%2C%203%20short%20tracks%20and%20instructions.Lasting%20durability%20for%20girls%20and%20boys%20ages%208%20and%20up%2C%20it’s%20the%20learning%20toy%20children%20(and%20savvy%20adults)%20return%20to%20over%20and%20over%20again!ContentsInstructions%20(D%2C%20F%2C%20I%2C%20EN%2C%20NL%2C%20E)%2C%203%20length-adjustable%20bridges%2C%202%20extra-long%20narrow%20plastic%20tracks%2C%202%20extra-long%20slow%20plastic%20tracks%2C%201%20long%20plastic%20track%2C%202%20medium%20plastic%20track%2C%203%20short%20plastic%20track.