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88-button array, owned by former curator of electricity at a major science and technology museum. Materials: plastic, copper/brass. In wooden case with color-coded clips and brass rod. Date: Unknown. : r/whatisthisthing
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BBC Two - KS1 Science Clips, Sorting with Using Materials, Materials and their properties (clip compilation)
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BBC – Schools Science Clips – Grouping and changing materials – Google Chrome 18052016 135700 | Escola Joaquim Palacín
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BBC Two - KS1 Science Clips, Sorting with Using Materials, What materials are different objects made from?
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88-button array, owned by former curator of electricity at a major science and technology museum. Materials: plastic, copper/brass. In wooden case with color-coded clips and brass rod. Date: Unknown. : r/whatisthisthing
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