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The black box
por
In trying to determine the contents of a mysterious black box they find on the beach, four boys learn about the scientific method of inquiry.
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- ● science & technology
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In trying to determine the contents of a mysterious black box they find on the beach, four boys learn about the scientific method of inquiry.
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"In trying to determine the contents of a mysterious black box they find on the beach, four boys learn about the scientific method of inquiry."
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