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What's The Place Value?

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$4.59 - $8.95

Unthinkable

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$6.79 - $7.69

Cells

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$6.59

Tornadoes

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$14.29

Waves of Light and Sound

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$63.99

Animal Science

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Erosion

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$9.59

Seasons of the Ocean Biome

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Pyramids of Egypt

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$13.19 - $15.09

Seasons Of The Desert Biome

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$5.89 - $17.29

Plan and Investigate It!

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Money Counts

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$7.59

Nervous System

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Seasons Of The Boreal Forest Biome

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$10.39

Skyscrapers and Towers

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$4.59 - $16.59

Seasons Of The Freshwater Pond Biome

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$15.89 - $21.39

Seasons Of The Tundra Biome

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$23.19

What's the Matter?

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Forces and Motion at Work

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$4.79

Seasons Of The Grassland Biome

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$66.59

Perennial Plants and Annual Plants Explained

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$29.46

La Tierra y La Importancia del Agua (the Earth and the Role of Water)

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$10.59

Seasons of the Estuary Biome

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$10.39

No puedes llevar esos genes: You Can't Wear These Genes

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Teaching STEM and Common Core with Mentor Texts: Collaborative Lesson Plans, K-5: Collaborative Lesson Plans, Kâ€"5

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$66.29

STEM Jobs with Animals

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$10.29

Step-by-Step Experiments with the Water Cycle

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$23.19

Volcanoes

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$10.99

Seasons of the Grassland Biome

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$22.79

Seasons of the Deciduous Forest Biome

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$22.79