Up in the Garden and Down in the Dirt: Go Dig It Up
Four books in this series put their second world somewhere you cannot get to. This one puts it four inches down in your own yard, and that changes what you...
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Over and Under the Snow: Start the Series Here
Snow is not a lid on a dead world. There is a warmer gap underneath it, animals are awake and busy in there all winter, and this is the picture...
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Over and Under the Canyon: Shade Is the Habitat
Four books in this series hide their second world underground or underwater. This one hides it in shade, which is a stranger idea and a truer one about how deserts...
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Ada Twist and the Perilous Pants: Why Helium Goes Up
The funny part is the trousers. The useful part is the question underneath them, which is how high a thing can float and what makes it stop.
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Ada Twist and the Disappearing Dogs: Method, Out Loud
Most books that teach the scientific method hide it inside the plot. This one puts the words on the page, and for a certain child that is the reason to...
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T. Rex Teeth: How Anyone Knows What a Dinosaur Bit
Nobody has ever watched a T. rex eat. That single sentence is the difference between this book and the rest of the series on our shelf, and it is the...
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