108.
What Do We Know Now?: Drawing Conclusions and Answering the Question (Step Into Science)
by Crabtree Publishing Co. Sta...
ISBN: 9780778751533
List Price: $26.60
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What's Going On?: Collecting and Recording Your Data (Step Into Science)
by Crabtree Publishing Co. Sta...
ISBN: 9780778751557
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What's the Plan?: Designing Your Experiment (Step Into Science)
by Crabtree Publishing Co. Sta...
ISBN: 9780778751540
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What Just Happened?: Reading Results and Making Inferences (Step Into Science)
by Crabtree Publishing Co. Sta...
ISBN: 9780778751564
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What Do We Know Now?: Drawing Conclusions and Answering the Question (Step Into Science)
by Crabtree Publishing Co. Sta...
ISBN: 9780778751687
List Price: $8.95
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120.
How Did That Get Here? -- Set of 17 Volumes
by Crabtree Publishing Company...
ISBN: 9780778724773
List Price: $452.20