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| Lesson 1: Telling and Showing Time to the Hour / Solving Elapsed-Time Problems |
| Lesson 2: Graphing Data on a Bar Graph / Reading a Graph |
| Lesson 3: Identifying Digits and Writing Two-Digit Numbers |
| Lesson 4: Telling and Showing Time to the Nearest Half Hour / Estimating Time to the Nearest Half Hour |
| Lesson 5: Identifying Addends, Sums, and the Commutative Property of Addition / Addition Facts: Adding 0, Adding 1, and Doubles / Identify a Missing Addend |
| Lesson 6: Estimating Length to the Nearest Inch / Measuring and Drawing Line Segments to the Nearest Inch / Drawing Congruent Line Segments |
| Lesson 7: Identifying Properties of a Rectangle / Identifying and Measuring the Length and Width of a Rectangle |
| Lesson 8: Ordering Two-Digit Numbers |
| Lesson 9: Identifying Even and Odd Numbers |
| Lesson 10-1: Subtraction Facts: Subtracting 0 and 1; Differences of 0 and 1 / Using Logical Reasoning to Solve a Problem / Making an Organized List to Solve a Problem |
| Lesson 10-2: Written Assessment 1 / Oral Assessment 1 / Identifying the Relative Value of Pattern Blocks / Covering Designs with Pattern Blocks |
| Lesson 11: Identifying, Acting Out, Drawing Pictures, and Writing Number Sentences for “Some, Some More” and “Some, Some Went Away” Story Problems |
| Lesson 12: Dividing Squares Into Two and Four Equal Parts / Identifying Congruent Shapes |
| Lesson 13: Counting Dimes and Nickels / Comparing the Values of Sets of Coins |
| Lesson 14: Adding 10 to a Two-Digit Number and Subtracting 10 From a Two-Digit Number Using Mental Computation |
| Lesson 15-1: Addition Facts: Sums of 10 |
| Lesson 15-2: Written Assessment 2 / Identifying the Relative Value of Pattern Blocks / Making a Design with a Given Value Using Pattern Blocks |
| Lesson 16: Writing the Date Using Digits |
| Lesson 17: Dividing Squares Into Two, Four, and Eight Equal Parts / Identifying and Shading Halves, Fourths, and Eighths |
| Lesson 18: Reading a Thermometer to the Nearest 10 Degrees Fahrenheit / Rounding Numbers to the Nearest Ten |
| Lesson 19: Rounding Numbers to the Nearest Ten |
| Lesson 20-1: Addition Facts: Adding 2 / Writing Addition and Subtracting Fact Families / Using Logical Reasoning to Solve a Problem / Working Backwards to Solve a Problem |
| Lesson 20-2: Written Assessment 3 / Oral Assessment 2 / Naming and Drawing Polygons |
| Lesson 21: Dividing a Square Into Three Equal Parts / Identifying and Shading Thirds |
| Lesson 22: Rewriting Numbers by Regrouping Tens and Ones / Trading Dimes and Pennies / Making an Organized List |
| Lesson 23: Counting Dimes, Nickels, and Pennies |
| Lesson 24: Writing Fractions Using the Fraction Bar |
| Lesson 25-1: Addition Facts: Adding 9 |
| Lesson 25-2: Written Assessment 4 / Writing Fraction Number Sentences That Equal 1 |
| Lesson 26: Identifying Dozen and Half Dozen / Writing a Fraction to Show a Part of a Set |
| Lesson 27: Reading and Writing Numbers to 1,000 Using Digits |
| Lesson 28: Writing Money Amounts Using Dollar Signs and Cent Symbols |
| Lesson 29: Reading and Shading a Thermometer to the Nearest 2 Degrees Fahrenheit |
| Lesson 30-1: Addition Facts: Adding 3 and 4 / Using Guess and Check to Solve a Problem / Solving a Problem by Acting It Out |
| Lesson 30-2: Written Assessment 5 / Oral Assessment 3 / Collecting Data / Tallying |
| Lesson 31: Adding Multiples of 10 Using Mental Computation / Estimating the Sum of Two Two-Digit Numbers |
| Lesson 32: Estimating, Measuring, and Drawing Line Segments Using Centimeters |
| Lesson 33: Adding a Multiple of 10 to a Number Using Mental Computation |
| Lesson 34: Ordering Three-Digit Numbers / Listing Combinations |
| Lesson 35-1: Addition Facts: Adding 5 and 6 |
| Lesson 35-2: Written Assessment 6 / Writing Number Sentences for “Some, Some More” and “Some, Some Went Away” Stories / Writing Story Problems for Addition and Subtraction Number Sentences |
| Lesson 36: Counting Quarters |
| Lesson 37: Finding Half of a Set of Objects |
| Lesson 38: Adding Three or More Single-Digit Numbers |
| Lesson 39: Telling and Showing Time to Five-Minute Intervals / Identifying a.m. and p.m. / Identifying the Number of Minutes in an Hour and the Number of Hours in a Day |
| Lesson 40-1: Addition Facts: Adding 7 and 8 / Drawing a Picture to Solve a Problem / Making a Table to Solve a Problem |
| Lesson 40-2: Written Assessment 7 / Oral Assessment 4 / Conducting a Survey / Drawing and Reading a Pictograph |
| Lesson 41: Identifying Place Value to Hundreds / Writing Three-Digit Numbers in Expanded Form |
| Lesson 42: Adding Two-Digit Numbers Using Mental Computation |
| Lesson 43: Naming Line Segments / Identifying and Making Scalene, Isosceles, and Equilateral Triangles |
| Lesson 44: Identifying a Missing Digit in an Addition Problem |
| Lesson 45-1: Multiplying by 1 and by 10 / Identifying Factors and Products |
| Lesson 45-2: Written Assessment 8 / Estimating and Finding the Capacity of Containers / Ordering Containers by Capacity / Identifying 1-Cup Liquid Measure / Identifying Pint, Quart, Half-Gallon, Gallon, and Liter Containers |
| Lesson 46: Reading a Thermometer to the Nearest Degree Fahrenheit / Identifying the Freezing and Boiling Points of Water and Normal Body Temperature on the Fahrenheit Scale / Estimating a Reasonable Temperature |
| Lesson 47: Using Comparison Symbols (>, <, and =) |
| Lesson 48: Identifying Horizontal, Vertical, and Oblique Lines and Line Segments |
| Lesson 49: Finding Perimeter |
| Lesson 50-1: Subtraction Facts: Subtracting a Number From 10 / Making an Organized List to Solve a Problem |
| Lesson 50-2: Written Assessment 9 / Oral Assessment 5 / Making a Shape for a Given Perimeter |
| Lesson 51: Constructing a Number Line |
| Lesson 52: Adding Two-Digit Numbers Using the Addition Algorithm (Part 1) / Using Estimation to Verify the Reasonableness of Calculated Results |
| Lesson 53: Adding Two-Digit Numbers Using the Addition Algorithm (Part 2) / Using Estimation to Verify the Reasonableness of Calculated Results |
| Lesson 54: Drawing and Measuring Line Segments to the Nearest Half Inch |
| Lesson 55-1: Multiplication Facts: Multiplying by 7 |
| Lesson 55-2: Written Assessment 10 / Locating and Naming Points on a Number Line With a Scale of 10 / Estimating Capacity / Drawing a Bar Graph Using a Scale of 10 |
| Lesson 56: Acting Out, Drawing Pictures, and Writing Number Sentences for “Equal-Groups” Stories |
| Lesson 57: Drawing Pictures and Writing Number Sentences for “Equal-Groups” Stories |
| Lesson 58: Identifying and Drawing Lines of Symmetry |
| Lesson 59: Writing Division Problems in Three Ways / Dividing by 10, by 7, and by 1 / Identifying Questions |
| Lesson 60-1: Subtraction Facts: Subtracting 2; Differences of 2 / Using Guess and Check to Solve a Problem / Solving a Problem by Making It Simpler |
| Lesson 60-2: Written Assessment 11 / Oral Assessment 6 / Measuring With Cups, Tablespoons, and Teaspoons / Reading a Recipe |
| Lesson 61: Writing a Part of a Set as a Fraction |
| Lesson 62: Subtracting a Multiple of 10 From a Number Using Mental Computation / Estimating Differences of Two Two-Digit Numbers |
| Lesson 63: Squaring Numbers / Identifying Perfect Squares / Finding the Area of a Square / Simplifying Expressions With Exponents of 2 |
| Lesson 64: Showing Three- and Four-Digit Numbers Using Base Ten Blocks / Writing Three- and Four-Digit Numbers for a Model or a Picture |
| Lesson 65-1: Subtraction Facts: Subtracting 3 and 4; Differences of 3 and 4 |
| Lesson 65-2: Written Assessment 2 / Following a Recipe / Setting a Dial and Determining Elapsed Time |
| Lesson 66: Identifying the Missing Addend in a “Some, Some More” Story |
| Lesson 67: Subtracting Two-Digit Numbers |
| Lesson 68: Writing Numbers to 1,000 Using Words |
| Lesson 69: Adding and Subtracting Multiples of 100 |
| Lesson 70-1: Multiplication Facts: Multiplying by 2 / Looking for a Pattern to Solve a Problem / Drawing a Picture to Solve a Problem / Making a Table to Solve a Problem |
| Lesson 70-2: Written Assessment 13 / Oral Assessment 7 / Drawing and Reading a Line Graph |
| Lesson 71: Telling and Showing Time to the Minute |
| Lesson 72: Rounding a Number to the Nearest Hundred / Estimating Sums and Differences of Three-Digit Numbers |
| Lesson 73: Comparing Fractions With Denominators of 2, 3, and 6 Using Pattern Blocks (Part 1) / Adding and Subtracting Fractions With Denominators of 2, 3, and 6 Using Pattern Blocks (Part 1) |
| Lesson 74: Writing a Fraction to Show a Part of a Whole / Comparing Fractions With Denominators of 2, 3, and 6 Using Pattern Blocks (Part 2) / Adding and Subtracting Fractions with Denominators of 2, 3, and 6 Using Pattern Blocks (Part 2) |
| Lesson 75-1: Subtraction Facts: Subtracting 5 and 6; Differences of 5 and 6 |
| Lesson 75-2: Written Assessment 14 / Reading and Writing Roman Numerals to 31 |
| Lesson 76: Adding Three-Digit Numbers |
| Lesson 77: Identifying Ordinal Position |
| Lesson 78: Reading and Writing Money Amounts to $1,000 / Writing Money Amounts Using Fractions and Decimals / Writing Checks |
| Lesson 79: Selecting Coins for a Given Amount |
| Lesson 80-1: Subtraction Facts: Subtracting 7, 8, and 9 / Solving a Problem by Making It Simpler / Drawing a Picture to Solve a Problem / Making a Table to Solve a Problem / Looking for a Pattern to Solve a Problem |
| Lesson 80-2: Written Assessment 15 / Oral Assessment 8 / Making Reasonable Predictions by Collecting and Analyzing Data |
| Lesson 81: Finding Square Roots of Perfect Squares / Finding the Length of the Side of a Square Given the Area |
| Lesson 82: Adding Money Amounts (Decimals) |
| Lesson 83: Reading and Showing the Temperature on the Celsius Scale |
| Lesson 84: Identifying the Number of Days in Each Month / Identifying the Number of Days in a Year |
| Lesson 85-1: Multiplication Facts: Multiplying by 0; Multiplying by 5 / Identifying the Commutative Property of Multiplication |
| Lesson 85-2: Written Assessment 16 / Estimating and Measuring Distance Using Feet, Yards, and Meters / Identifying the Number of Inches in a Foot and in a Yard, Feet in a Yard, and Centimeters in a Meter |
| Lesson 86: Identifying and Solving “Larger-Smaller-Difference” Problems |
| Lesson 87: Making and Drawing Arrays / Writing Number Sentences for Arrays |
| Lesson 88: Estimating and Finding the Area of a Rectangle |
| Lesson 89: Finding the Sum of Three Addends |
| Lesson 90-1: Division Facts: Dividing by 2 and by 5 / Working Backward to Solve a Problem |
| Lesson 90-2: Written Assessment 17 / Oral Assessment 9 / Determining the Likelihood of an Event / Determining the Fairness of a Game |
| Lessons 91–100 |
| Lesson 91: Subtracting Two- and Three-Digit Numbers (Part 1) |
| Lesson 92: Subtracting Two- and Three-Digit Numbers (Part 2) |
| Lesson 93: Comparing and Ordering Unit Fractions With Denominators of 2, 3, 4, and 8 Using Fraction Strips / Adding and Subtracting Fractions With Like Denominators of 2, 3, 4, and 8 Using Fraction Strips |
| Lesson 94: Comparing and Ordering Fractions With Denominators 2, 3, 4, 5, 6, 8, 10 Using Pictures / Identifying Fractions That Equal 1/2 Using Pictures / Adding and Subtracting Fractions with Like Denominators of 2, 3, 4, 5, 6, 8, and 10 |
| Lesson 95-1: Multiplication Facts: Multiplying by 3 |
| Lesson 95-2: Written Assessment 18 / Identifying Units of Weight and Mass: Ounces, Pounds, Tons, Grams, and Kilograms / Estimating the Mass of an Object |
| Lesson 96: Subtracting Money Amounts (Decimals) / Subtracting Across Zeros |
| Lesson 97: Telling and Showing Time to the Quarter Hour |
| Lesson 98: Showing Fractional Amounts Greater Than 1 / Writing Mixed Numbers |
| Lesson 99: Measuring and Drawing Line Segments to the Nearest Quarter Inch |
| Lesson 100-1: Multiplication Facts: Multiplying by 4 / Making an Organized List to Solve a Problem |
| Lesson 100-2: Written Assessment 19 / Oral Assessment 10 / Identifying Parallel Lines and Line Segments / Identifying the Properties of Quadrilaterals |
| Lesson 101: Finding the Missing Addend for a Sum of 100 |
| Lesson 102: Making Change From $1.00 |
| Lesson 103: Reading and Writing Six-Digit Numbers / Multiplying by 100 and by 1,000 |
| Lesson 104: Writing a Four-Digit Number in Expanded Form |
| Lesson 105-1: Division Facts: Dividing by 3 and by 4 / Writing Multiplication and Division Fact Families |
| Lesson 105-2: Written Assessment 20 / Identifying Perpendicular Lines and Line Segments |
| Lesson 106: Adding Money Amounts to $99,999.99 / Writing Checks for Money Amounts to $99,999.99 |
| Lesson 107: Acting Out, Drawing Pictures, and Writing Number Sentences for Division Story Problems |
| Lesson 108: Writing Number Sentences for Division Story Problems |
| Lesson 109: Multiplying a Multiple of 10, 100, or 1,000 by a Single-Digit Number |
| Lesson 110-1: Multiplication Facts: Multiplying by 9 / Solving a Problem by Making It Simpler / Making a Table to Solve a Problem |
| Lesson 110-2: Written Assessment 21 / Oral Assessment 11 / Identifying Transformations: Translations, Rotations, and Reflections |
| Lesson 111: Identifying a Fractional Part of a Set / Determining Age |
| Lesson 112: Multiplying a One-Digit Number and a Two-Digit Number Using Mental Computations |
| Lesson 113: Identifying Right, Obtuse, and Acute Angles / Naming Triangles by Angle Size |
| Lesson 114: Measuring Line Segments Using Millimeters |
| Lesson 115-1: Multiplication Facts: Multiplying by 6 |
| Lesson 115-2: Written Assessment 2 / Identifying Geometric Solids / Identifying Faces, Vertices, and Edges of a Geometric Solid / Constructing a Cube |
| Lesson 116: Multiplying a Single-Digit Number and a Multi-Digit Number Using the Multiplication Algorithm |
| Lesson 117: Identifying a Function Rule |
| Lesson 118: Simplifying Expressions Containing Parentheses / Multiplying Three or More Factors / Using the Associative Property of Multiplication |
| Lesson 119: Writing Tenths Using Common and Decimal Fractions / Measuring to the Nearest Tenth of a Centimeter |
| Lesson 120-1: Making and Using a Multiplication Table / Multiplication Facts: Multiplying by 8 / Working Backward to Solve a Problem / Using Guess and Check to Solve a Problem |
| Lesson 120-2: Written Assessment 23 / Oral Assessment 12 / Identifying the Factors of a Number / Identifying Prime Numbers Less Than 20 |
| Lesson 121: Finding the Volume of a Rectangular Prism |
| Lesson 122: Dividing Two- and Three-Digit Multiples of 10 by a One-Digit Number Using Mental Computation |
| Lesson 123: Locating Negative Numbers on a Number Line |
| Lesson 124: Dividing a Two-Digit Number by a One-Digit Number |
| Lesson 125-1: Determining Unit Cost / Division Facts: Dividing by 6, by 8, and by 9 |
| Lesson 125-2: Written Assessment 24 / Locating Information on a Map |
| Lesson 126: Showing Addition, Subtraction, and Multiplication on a Number Line |
| Lesson 127: Identifying Units of Measurement for Long Distances / Using a Scale to Find Distance on a Map |
| Lesson 128: Adding Positive and Negative Numbers |
| Lesson 129: Creating a Coordinate Plane / Identifying the Location of a Point on a Coordinate Plane |
| Lesson 130-1: Graphing Points on a Coordinate Plane / Solving a Problem by Making It Simpler |
| Lesson 130-2: Written Assessment 25 / Oral Assessment 13 / Showing Large Numbers Using Objects / Rounding Numbers to the Nearest Thousand / Comparing and Order Six-Digit Numbers |
| Lesson 131: Writing Hundredths Using Common and Decimal Fractions |
| Lesson 132: Dividing a Two-Digit Number by a One-Digit Number With a Remainder |
| Lesson 133: Simplifying Expressions With Addition, Subtraction, Multiplication, and Division |
| Lesson 134: Identifying Place Value to Millions |
| Lesson 135: Written Assessment 26 / Estimating a Large Collection by Sampling |
| Lesson A: Making a Line Plot / Identifying the Mode, Range, and Median of a Set of Data |
| Lesson B: Finding the Mean of a Set of Data |
| Lesson C: Calculating the Probability of an Event |
| Lesson D: Using a Calculator to Add, Subtract, Multiply, Divide, and Find Square Roots / Predicting the Relative Size of Solutions |
| Lesson E: Choosing an Appropriate Method for Finding the Answer to a Problem / Using a Calculator to Compare Data / Using a Calculator to Find the Range and Mean of a Set of Data |