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Lrnr guides each student through a personalized learning process, orchestrating the presentation of OpenStax Prealgebra in a way that is paced, sequenced and optimized for each student based on their individual knowledge, needs, and abilities. Lrnr also provides accurate realtime learning analytics that help instructors pinpoint student problem areas and provide relevant remediation. Lrnr is a cloudbased educational content delivery and personalization platform that runs in a web browser.
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Whole Numbers 
13
05
50


01  
Introduction to Whole Numbers  
Add Whole Numbers  
Subtract Whole Numbers  
Multiply Whole Numbers  
Divide Whole Numbers  
The Language of Algebra 
13
05
50


02  
Use the Language of Algebra  
Evaluate, Simplify, and Translate Expressions  
Solving Equations Using the Subtraction and Addition Properties of Equality  
Find Multiples and Factors  
Prime Factorization and the Least Common Multiple  
Integers 
04
05
51


03  
Introduction to Integers  
Add Integers  
Subtract Integers  
Multiply and Divide Integers  
Solve Equations Using Integers; The Division Property of Equality  
Fractions 
08
07
61


04  
Visualize Fractions  
Multiply and Divide Fractions  
Multiply and Divide Mixed Numbers and Complex Fractions  
Add and Subtract Fractions with Common Denominators  
Add and Subtract Fractions with Different Denominators  
Add and Subtract Mixed Numbers  
Solve Equations with Fractions  
Decimals 
12
07
61


05  
Decimals  
Decimal Operations  
Decimals and Fractions  
Solve Equations with Decimals  
Averages and Probability  
Ratios and Rate  
Simplify and Use Square Roots  
Percents 
09
05
51


06  
Understand Percent  
Solve General Applications of Percent  
Solve Sales Tax, Commission, and Discount Applications  
Solve Simple Interest Applications  
Solve Proportions and their Applications  
The Properties of Real Numbers 
07
05
50


07  
Rational and Irrational Numbers  
Commutative and Associative Properties  
Distributive Property  
Properties of Identity, Inverses, and Zero  
Systems of Measurement  
Solving Linear Equations 
01
04
40


08  
Solve Equations Using the Subtraction and Addition Properties of Equality  
Solve Equations Using the Division and Multiplication Properties of Equality  
Solve Equations with Variables and Constants on Both Sides  
Solve Equations with Fraction or Decimal Coefficients  
Math Models and Geometry 
19
07
81


09  
Use a Problem Solving Strategy  
Solve Money Applications  
Use Properties of Angles, Triangles, and the Pythagorean Theorem  
Use Properties of Rectangles, Triangles, and Trapezoids  
Solve Geometry Applications: Circles and Irregular Figures  
Solve Geometry Applications: Volume and Surface Area  
Solve a Formula for a Specific Variable  
Polynomials 
11
06
60


10  
Add and Subtract Polynomials  
Use Multiplication Properties of Exponents  
Multiply Polynomials  
Divide Monomials  
Integer Exponents and Scientific Notation  
Introduction to Factoring Polynomials  
Graphs 
11
04
40


11  
Use the Rectangular Coordinate System  
Graphing Linear Equations  
Graphing with Intercepts  
Understand Slope of a Line 