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Two Types of Muscles
life science · NGSS 4-LS1-1
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What Are Muscles
life science · NGSS 4-LS1-1
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How Muscles Move Bones
life science · NGSS 4-LS1-1
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Muscular System
life science · MS-LS1-3
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Grades 4–6
How Food Helps Animals Move
life science · 5-LS1-1
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Grades 5–8
How Cells Release Energy Without Oxygen
life science · MS-LS1-7
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Human Impacts: Invasive Species
life science · MS-LS2-4
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How Heart Pumps Blood
life science · NGSS 4-LS1-1
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Grades 6–8
How Introduced Species Disrupt Ecosystems
earth science · MS-ESS3-4
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Grades 3–5
How Organ Systems Work Together
life science · NGSS 4-LS1-1
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Grades 1–2
How Starfish Protect Themselves
reading informational text · RI.1.1
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Respiratory System
life science · MS-LS1-3
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Grades 1–3
What Turtles Eat?
reading informational text · RI.1.2
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Levels of Organization
life science · MS-LS1-3
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Grades 3–5
Nervous System and Senses
science
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Farm Animal Horse
animal
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Grades 3–5
How All Body Systems Connect
life science · NGSS 4-LS1-1
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Grades 5–8
Weightlessness and Microgravity
science · MS-PS2-4
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Grades 5–8
Organization of the Human Body
life science · MS-LS1-3
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Grades 5–8
Specialized Cells
life science · MS-LS1-1
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Life on the Space Station
earth science · MS-ESS1-1
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How the Lungs Work
life science · NGSS 4-LS1-1
$1.50
Passage
Grades 3–5
Cells Tissues Organs
life science · NGSS 4-LS1-1
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Passage
Grades 3–5
How Nerves Carry Messages
life science · NGSS 4-LS1-2
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Grades 1–2
Why Starfish are Important
reading informational text · RI.1.1
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