Sandra Markle

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Outside And Inside Sharks

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Praying Mantises: Hungry Insect Heroes

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Predators (Amazing Animals)

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Really wild animals: Sea babies

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Science in a Bottle

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Science surprises

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Science to the Rescue

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The Case of the Vanishing Golden Frogs: A Scientifi …

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The young scientist's guide to successful science p …

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Weather Electricity Environmental Investigations