Childu0026#39;s dream: all kids has a scientistu0026#39;s dream, how should we help our child? Letu0026#39;s start from newtonu0026#39;s cradle balance balls and give the dream to your child.

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30-40 second: balls to move smoothly for up to 40 seconds can help you explain your child that physical knowledge and newtonu0026#39;s story, can help your explore the mysteries of the natural sciencesn with your child toghter.

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Black wooden base: the hard wooden base can keep the smooth operation of the newtonu0026#39;s cradle balance balls.

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Our promise: the material of newtonu0026#39;s cradle is metal and wooden, not plastic. We have a full refund for any quality problems.

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