<meta http-equiv="refresh" content="1; url=/nojavascript.html"> Free Math & Science Adaptive Practice and Worksheets | CK-12 Foundation
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GRADES 1–5
Grade 1
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Grade 5
MATH
Arithmetic
Measurement
Algebra
Geometry
Probability
Statistics
Trigonometry
Analysis
Calculus
SCIENCE
Earth Science
Life Science
Physical Science
Biology
Chemistry
Physics
ENGLISH
Spelling
Geometry
Definitions and Introduction to Proof
Parallel and Perpendicular Lines
Triangle Relationships
Quadrilateral Classification
Similarity
Pythagorean Theorem and Pythagorean Triples
Circles
Perimeter, Circumference, Area, Surface Area, Volume
Rigid Transformations
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