Math 3: A Teaching Textbook

Lessons

• 1 Simple Additions and Subtractions
• 2 Ones and Tens
• 3 Odd and Even Numbers
• 4 Days, Weeks, Months, and Years
• 5 Adding Twos
• 6 Differences of One
• 7 Sums of Ten
• Quiz Quiz 1
• 8 Doubles
• 9 A Little More than Double
• 10 Lines and Line Segments
• 11 Horizontal, Vertical, and Oblique Line Segments
• 12 Angles
• 13 Common Shapes
• 14 Taking Away Half of a Double
• Quiz Quiz 2
• 15 Adding Ten the Easy Way
• 16 Subtracting Ten the Easy Way
• 17 Rounding Numbers to the Nearest Ten
• 18 Adding Nine
• 19 Subtracting Nine
• 20 Pictographs
• 21 More Simple Additions
• Quiz Quiz 3
• 22 Doing Subtractions by Adding
• 23 Writing Numbers to 99
• 24 Adding Multiples of Ten
• 25 Hundreds and Thousands
• 26 Subtracting Multiples of Ten
• 27 Bar Graphs
• 28 More on Place Value
• Quiz Quiz 4
• 29 Adding Multiples of 100
• 30 From Digits to Words
• 31 From Words to Digits
• 32 Subtracting Multiples of 100
• 33 Line Graphs
• 34 Addition Puzzles
• 35 Long Addition
• Quiz Quiz 5
• 36 Subtraction Puzzles
• 37 Parts of a Whole
• 38 Adding Tens and Ones in Your Head
• 39 Writing Fractions
• 40 Part of a Group
• 41 More Long Addition
• 42 Long Subtraction
• Quiz Quiz 6
• 43 Greater Than, Less Than
• 44 More Long Subtraction
• 45 Listing Numbers in Order
• 46 Adding Three or More Single-Digit Numbers
• 47 Carrying
• 48 Addition Word Problems
• 49 Perimeter
• Quiz Quiz 7
• 50 Carrying Twice
• 51 Expanded Form
• 52 Adding Strings of Bigger Numbers
• 53 What is Multiplication?
• 54 Multiplication Basics
• 55 More Addition Puzzles
• 56 Subtraction Word Problems
• Quiz Quiz 8
• 57 Multiplying by 10
• 58 Multiplying by 5
• 59 Multiplying by 2
• 60 Multiplying by 4
• 61 Multiplying by 3
• 62 Multiplying by 6
• 63 Multiplying by 8
• Quiz Quiz 9
• 64 Multiplying by 9
• 65 Multiplying by 11
• 66 Multiplying by 7 and 12
• 67 The Multiplication Table
• 68 Comparison Word Problems
• 69 Multiplying with Two Digits
• 70 Rounding to the Nearest Hundred
• Quiz Quiz 10
• 71 Paper Money
• 72 Adding Paper Money
• 73 Coins
• 74 Adding Coins
• 75 More Money Problems
• 76 Finding Area by Counting Tiles
• 77 Finding Area by Multiplying
• Quiz Quiz 11
• 78 Multiplication Word Problems
• 79 Making Change
• 80 Writing Money with a Dollar Sign and Decimal Point
• 81 Carrying When Multiplying
• 82 Comparing Small Amounts of Money
• 83 Counting Larger Amounts of Money
• 84 The Two Halves of the Day
• Quiz Quiz 12
• 85 Digital Clocks
• 86 Multiplying Three or More Numbers
• 87 Regrouping
• 88 Adding Dollars and Cents on Paper
• 89 Subtracting Dollars and Cents on Paper
• 90 Clocks with Hands--Part 1
• 91 Dozen and Half Dozen
• Quiz Quiz 13
• 92 Mixed Numbers
• 93 Number Lines
• 94 Rulers
• 95 Yardsticks and Tape Measures
• 96 Clocks with Hands--Part 2
• 97 Reading a Thermometer
• 98 Cups, Pints, Quarts, and Gallons
• Quiz Quiz 14
• 99 Identifying the Factors of a Number
• 100 More Adding Dollars and Cents
• 101 More Subtracting Dollars and Cents
• 102 Showing Addition and Subtraction on a Number Line
• 103 Showing Multiplication on a Number Line
• 104 Understanding Directions on a Map
• 105 Comparing and Adding Fractions with Common Denominators
• Quiz Quiz 15
• 106 Subtracting Fractions with Common Denominators
• 107 Regrouping Twice
• 108 Place Value to Hundred Thousands
• 109 Multiplying by 100 and 1,000 in Your Head
• 110 Multiplying a Multiple of 10, 100, or 1,000 in Your Head
• 111 The Meaning of Division
• 112 Division Basics
• Quiz Quiz 16
• 113 Dividing by 0, 1, and the Number Itself
• 114 Dividing Using Your Multiplication Facts
• 115 More Carrying when Multiplying
• 116 The Metric System
• 117 Division Word Problems
• 118 Percents
• Quiz Quiz 17