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14by Fraknoi, Andrew, Schatz, DennisGet full text
Published in The Science teacher (National Science Teachers Association)
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15by Fraknoi, Andrew, Schatz, DennisGet full text
Published in The Science teacher (National Science Teachers Association)
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16by Fraknoi, Andrew, Schatz, DennisGet full text
Published in The Science teacher (National Science Teachers Association)
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17
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18by Fraknoi, Andrew, Schatz, DennisGet full text
Published in The Science teacher (National Science Teachers Association)
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19by Fraknoi, Andrew, Schatz, DennisGet full text
Published in The Science teacher (National Science Teachers Association)
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