Build, test, race a #NationalGeographic marble run!

National Geographic ·
Nature

What challenge would you try first? Ideal for kids aged 8 and up, available now on Amazon: https://www.amazon.com/dp/B07R92KFZR?th=1&linkCode=ll2&tag=ig-partnership-bluemarblemarblerunkit26oct-20&linkId=277d37a48cb60c513f386657096b0e47&language=en_US&gaOptInStatus=true&ref_=as_li_ss_tl Subscribe: https://www.youtube.com/natgeo Stream more on Disney+ ➡ Disney Plus:…

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