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We experienced a service interruption from 9:00 AM to 10:00 AM. PT. We apologize for any inconvenience this may have caused. (Posted: Tuesday 02/21/2017)
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Our Ancestor LUCA
Our Ancestor LUCA Real World
Discover what scientists have learned about the earliest common ancestor of life on Earth.
Grade: 9, 10, 11, 12
Created by: CK-12 Subject: Earth Science Difficulty level: At Grade
Real World
A Golden Smile
A Golden Smile Real World
Discover the math behind a beautiful smile.
Grade: 6
Created by: CK-12 Difficulty level: At Grade
Real World
Formation of First Cells
Formation of First Cells Read
Created by: CK-12 Subject: Biology Difficulty level: At Grade
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Chemical Properties of Alcohol
Chemical Properties of Alcohol Read
Created by: CK-12 Subject: Chemistry Difficulty level: At Grade
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The First Cells - Advanced
The First Cells - Advanced Read
Examines Earth's first cells.
Created by: CK-12
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First Cells
First Cells Read
Describes the first cells and the evolution of photosynthesis and cellular respiration.
Grade: 9, 10
Created by: CK-12 Subject: Biology Difficulty level: At Grade
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Recursion
Recursion Read
Grade: 11, 12
Created by: CK-12 Difficulty level: At Grade
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I Should Eat What? - Workbook
I Should Eat What? - Workbook Read
Created by: CK-12 Subject: Health Difficulty level: At Grade
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I Should Eat What?
I Should Eat What? Read
Created by: CK-12 Subject: Health Difficulty level: At Grade
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Evolution of Simple Cells
Evolution of Simple Cells Read
How simple cells evolved.
Grade: 9, 10
Created by: CK-12 Subject: Earth Science Difficulty level: At Grade
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