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Grades 5–8
Atomic Structure
physical science · MS-PS1-1+2
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“organic molecules” worksheets and activities
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Grades 5–8
What Mars Rovers Have Discovered
earth and space science · MS-ESS1-3
$1.50
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Grades 5–8
Covalent Bonds
physical science · MS-PS1-1
$1.50
Passage
Grades 5–8
Hydrogen Bonds
physical science · MS-PS1-1
$1.50
Passage
Grades 3–6
What Is Air Pressure
weather and climate
$1.50
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Grades 6–8
How Decomposers Return Carbon to the Soil
earth and space science · MS-ESS2-1
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Grades 6–8
What Are Fossil Fuels
earth and space science · MS-ESS3-1
$1.50
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Grades 6–8
What Is Biomass Energy
earth and space science · MS-ESS3-1
$1.50
Passage
Grades 3–8
What is a Polar Covalent Bond
physical science
$1.50
Passage
Grades 5–8
Soil Formation and Composition
earth and space science · MS-ESS2-1
$1.50
Passage
Grades 3–5
Biomass Energy
physical science · NGSS 4-ESS3-1
$1.50
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Grades 7–9
How Can We Help Pollinators and Stop Their Decline?
science · MS-LS2-4+3
$1.50
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Grades 5–8
Chemical Bonds
physical science · MS-PS1-1+2
$1.50
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Grades 5–8
Particle Model of Matter
physical science · MS-PS1-1+1
$1.50
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Grades 6–8
How Ancient Seas Form Petroleum Deposits
earth and space science · MS-ESS3-1
$1.50
Passage
Grades 5–8
How Does Soil Form From Rock
earth and space science · MS-ESS2-2
$1.50
Passage
Grades 5–8
Parts of an Atom
physical science · MS-PS1-1+2
Free
Passage
Grades 3–6
The Cytoplasm: The Cell's Inner World
science
$1.50
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Grade 6
Aerobic Respiration
life science
$1.50
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Grades 6–8
How Does Natural Gas Form
earth and space science · MS-ESS3-1
$1.50
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Grades 5–8
Could There Be Life on Enceladus
earth and space science · MS-ESS1-1
$1.50
Passage
Grades 5–8
Mass of a Proton
physical science · MS-PS1+3
Free
Passage
Grades 5–8
Do Protons and Electrons Have the Same Mass
physical science · MS-PS1+3
$1.50
Passage
Grades 5–8
What Charge Does a Neutron Have
physical science · MS-PS1+3
Free
Passage
Grades 5–8
How Many Neutrons Does Hydrogen Have
physical science · MS-PS1+3
Free
Passage
Grades 5–8
What Is the Charge of a Proton
physical science · MS-PS1+3
Free
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Grades 5–8
How Many Valence Electrons Does Oxygen Have
physical science · MS-PS1-2+1
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How Many Valence Electrons Does Chlorine Have
physical science · MS-PS1-2+1
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Passage
Grades 3–8
What is an Ionic Bond
physical science
$1.50
Passage
Grades 3–8
How to Name Ionic Compounds
physical science
$1.50
Passage
Grades 3–8
What are Valence Electrons
physical science
$1.50
Passage
Grades 3–8
What is Radioactivity
physical science
$1.50
Passage
Grades 3–8
What is Radioactive Decay
physical science
$1.50
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Grade 6
What Is Bioluminescence?
science
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Grade 6
Barnacles and Biofouling
science
$1.50
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Grade 6
Aortic Pathway
science
$1.50
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Grades 5–8
The Idea of the Atom
physical science · MS-PS1-1
$1.50
Passage
Grades 5–8
What are Ions
physical science · MS-PS1-1
$1.50
Passage
Grades 5–8
Nucleus of the Atom
physical science · MS-PS1-1
$1.50
Passage
Grades 5–8
How Atoms Differ
physical science · MS-PS1-1
$1.50
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Grades 5–8
Isotopes
physical science · MS-PS1-1
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Grades 5–8
Metallic Bonds
physical science · MS-PS1-1
$1.50
Passage
Grades 5–8
Chemical Bonding
physical science · MS-PS1-1
$1.50
Passage
Grades 5–8
Types of Radiation
physical science · MS-PS1-2
$1.50
Passage
Grades 5–8
Nuclear Fission
physical science · MS-PS1-1+1
$1.50
Passage
Grades 5–8
Nuclear Power Plants
physical science · MS-PS3-4+1
$1.50
Passage
Grades 5–8
Nuclear Safety and Waste
physical science · MS-PS3-4+2
$1.50
Passage
Grades 5–8
Radiocarbon Dating
physical science · MS-PS1-1+1
Free
Passage
Grades 5–8
Nuclear Fusion
physical science · MS-PS1-1+1
$1.50
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Grades 3–5
Internal Structures of Plants
science
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