| Putting Earth First: Eating and Living Green |
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6.7 |
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| Queen Victoria's Diamond |
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6.4 |
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| ¿Qué es el reino animal? (What is the Animal Kingdom?) |
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4.3 |
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| ¿Qué es la hibernación? (What is Hibernation?) |
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4.9 |
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| ¿Qué es un caballo? (What is a Horse?) |
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4.5 |
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| ¿Qué es un dinosaurio? (What is a Dinosaur?) |
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4.5 |
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| ¿Qué es un perro? (What is a Dog?) |
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4.5 |
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| ¿Qué son las redes y cadenas alimentarias? (What are Food Chains and Webs?) |
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5.3 |
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| ¿Qué son los reptiles? (What is a Reptile?) |
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4.6 |
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| Race and Crime |
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| Race into Space |
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| Rachel Carson |
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| Racism and Prejudice |
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6.8 |
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| Radical Republicans |
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4.9 |
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| Radisson and des Groseilliers - Fur Traders of the North |
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7.1 |
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| Rainforest Survival Guide |
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| Rats Around Us |
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6.3 |
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| Read, Recite, and Write Cinquains |
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4.2 |
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| Read, Recite, and Write Concrete Poems |
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4.3 |
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| Read, Recite, and Write Free Verse Poems |
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4.6 |
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| Read, Recite, and Write Haiku |
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4.0 |
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| Read, Recite, and Write Limericks |
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4.6 |
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| Read, Recite, and Write List Poems |
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4.4 |
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| Read, Recite, and Write Narrative Poems |
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4.8 |
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