Pre-Algebra (A Teaching Textbook)

Lessons

• 1 Number Beginnings
• 2 Adding and Subtracting Whole Numbers
• 3 Multiplying Whole Numbers
• 4 Dividing Whole Numbers
• 5 Divisibility
• 6 Fractions
• 7 Equivalent Fractions
• 8 Factoring and Canceling
• 9 Prime Numbers
• 10 Adding and Subtracting Fractions
• 11 Finding the Lowest Common Denominator
• 12 Mixed Numbers
• 13 Multiplying and Dividing Fractions
• 14 Fractions and Whole Numbers
• 15 Ill-Fitting Fractions
• 16 Hundredths, Thousandths....
• 17 Adding and Subtracting Decimals
• 18 Filling the Holes
• 19 Money and Decimals
• 20 Multiplying Decimals
• 21 Dividing Decimals
• 22 Decimal Remainders
• 23 Converting Fractions to Decimals
• 24 Never-ending Decimals
• 25 Percents
• 26 Calculating Percents
• 27 Percent of Any Number
• 28 Fractional Percents
• 29 Percents and Banking
• 30 Finding the Percent
• 31 Calculating a Grade
• 32 Units of Measurement
• 33 Unit Conversions
• 34 Skipping Around
• 35 Making a Table
• 36 The Metric System
• 37 It's all in a Name
• 38 Conveting in Metric
• 39 Converting Between Common and Metric
• 40 Little Squares
• 41 Area Unit Conversions
• 42 Area in the Metric System
• 43 Little Cubes
• 44 Volume Unit Conversions
• 45 Liquid Measures of Volume
• 46 Volume in the Metric System
• 47 Advanced Arithmetic
• 48 What's it for Anyway?
• 49 The Golden Rule of Algebra
• 50 Undoing Multiplication and Division
• 51 Changing Places
• 52 New Symbols
• 53 Undoing the Algebra Way
• 54 Solving Percent Problems with Algebra
• 55 Solving Distance Problems with Algebra
• 56 Less than Zero
• 57 The Number Line
• 58 How Negatives are Used
• 59 Addition with Negatives
• 60 Subtraction with Negatives
• 61 Multiplication with Negatives
• 62 Division with Negatives
• 63 Undoing Equations with Negatives Part 1
• 64 Undoing Equations with Negatives Part 2
• 65 Negatives and Fractions
• 66 Handling a -x
• 67 Dealing with -x in a Fraction
• 68 Order Matters
• 69 Writing Equations in Order
• 70 Order and the Fraction Bar
• 71 Using the Fraction Bar in Equations
• 72 Undoing in Reverse Part 1
• 73 Undoing in Reverse Part 2
• 74 Simplifying First
• 75 More Simplifying First
• 76 Adding x's
• 77 Subtracting x's
• 78 x and 1x
• 79 Work Problems
• 80 Fancy Distance Problems
• 81 x's on Both Sides
• 82 Refrigerator Repairs
• 83 Reducing Fractions with x's
• 84 Canceling x's
• 85 Fractions and Parentheses Part 1
• 86 Fractions and Parentheses Part 2
• 87 Multiplying Fractions with x's
• 88 Dividing Fractions with x's
• 89 Adding Fractions with x's
• 90 Subtracting Fractions with x's
• 91 Raising a Number to a power
• 92 Scientific Notations
• 93 Order and Powers
• 94 Adding and Subtracting Powers
• 95 Multiplying Powers
• 96 Multiplying Powers: Tougher Cases
• 97 Dividing Powers
• 98 Fractions with Powers
• 99 Taking a Root
• 100 Undoing Powers and Roots
• 101 An Exponent of 1
• 102 An Exponent of 2
• 103 Points, Lines and Planes
• 104 Angles
• 105 Pairs of Angles
• 106 Line and Angle Relationships
• 107 Triangles
• 108 Pythagorean Theorem
• 109 Quadrilaterals
• 110 Polygons
• 111 Congruent Figures
• 112 Similar Figures
• 113 Perimeter, Symmetry, and Reflections
• 114 Area Calculations
• 115 Circles
• 116 Solids
• 117 More on volume and Surface Area
• 118 Relations and Functions
• 119 More on Functions
• 120 Functional Notation
• 121 The Coordinate Plane
• 122 Graphing Equations
• 123 More on Graphing
• 124 The Slpe of a Line
• 125 Slope-Intercept Form
• 126 Horizontal and Vertical Lines
• 127 Measures of Central Tendency
• 128 Range and Stem-and-Leaf Plots
• 129 Histograms and Scatter Plots
• 130 Probability
• 131 Tree Diagrams
• 132 Fundamental Counting Principle
• 133 Inequalities
• 134 Undoing Inequalities
• 135 Undoing Inequalities in Reverse Order
• 136 Equations and the Distributive Property
• 137 Absolute Value
• 138 Distance Formula
• 139 More on Formulas