| | Home > Toys page 1 | | Rock Tumbler |  | | Transforming rough rocks into smooth and beautiful objets d'art can spark conversation in the areas of geology, cause and effect, and the origins of the physical world. The rock tumbler can foster independent play for one child, and cooperative play for a group.--M. Sullivan, Amazon.com editor and former schoolteacher | | Rock tumblers | | | | | | | | |
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Educational earth science and scientific toys page 2
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