Grade 2 (Topics)

1. 27 Introducing Division
   • 27.1 Understanding Division as Sharing
   • 27.2 Understanding Division as Repeated Subtraction
   • 27.3 Stories Using Division
   • 27.4 Division by Using a Number Line
   • 27.5 Divisors and Quotients
   • 27.6 Relating Multiplication and Division
   • 27.7 Make a Table and Look for a Pattern

1. 1 Introduction to Addition and Subtraction
   • 1.1 Addition Sentences
   • 1.2 Addition Stories
   • 1.3 Subtraction Sentences
   • 1.4 Subtractions by Separating
   • 1.5 Making Comparisons
2. 2 Addition and Subtraction
   • 2.1 Connecting Adding and Subtracting
   • 2.2 Inverse Relation of Addition to Subtraction
   • 2.3 Inverse Relation of Subtraction to Addition
   • 2.4 Balance Equation of Addition and Subtraction
   • 2.5 Using Objects in Problem Solving
3. 3 Addition
   • 3.1 Addition
   • 3.2 Single Digit Number Addition
   • 3.3 Adding Objects
   • 3.4 Doubling Numbers
   • 3.5 Using Near Doubles
   • 3.6 Order in Addition
4. 4 Concepts of Addition
   • 4.1 Add 9
   • 4.2 Add 8
   • 4.3 Balancing Addition Equations
   • 4.4 Using Numbers to Solve Addition Sentences
   • 4.5 Balance Addition Equations
5. 5 Subtraction
   • 5.1 Subtraction
   • 5.2 Subtracting One-Digit Numbers
   • 5.3 Using Subtraction to Check Addition
   • 5.4 Using Addition to Check Subtraction
   • 5.5 Subtraction Sentences Using Pictures
6. 6 Concepts of Subtraction
   • 6.1 Using Addition Double to Help You Subtract
   • 6.2 Using Addition Facts to Help You Subtract I
   • 6.3 Using Addition Facts to Help You Subtract II
   • 6.4 Use Subtraction to Find the Missing Part
   • 6.5 Balance Subtraction Equation
   • 6.6 Complete Subtraction Sentences
   • 6.7 Two Questions Problem Solving
7. 7 Learn Place Value up to 100 Part I
   • 7.1 Place Value Models
   • 7.2 Place Value Models for Tens
   • 7.3 Numbers Using Place Value Models
   • 7.4 Compare Numbers Using Models
   • 7.5 Compare Numbers Using Symbols
   • 7.6 Numbers: Before, After, and in Between
8. 8 Learn Place Value up to 100 Part II
   • 8.1 Identifying Number Pattern on a Hundred Chart
   • 8.2 Understanding Number Order
   • 8.3 Even and Odd Numbers
   • 8.4 Identify Digits in Tens and Ones Place
   • 8.5 Regroup Tens and Ones
   • 8.6 Place Value in Addition
   • 8.7 Using Data from a Chart
9. 9 Counting Money Part I
   • 9.1 Identify the Values and Names of Coins
   • 9.2 Count Dimes, Nickels, and Pennies
   • 9.3 Count Quarters and Half-Dollars
   • 9.4 Count Group of Different Coins
   • 9.5 Converting Cents to Dollars
10. 10 Counting Money Part II
    • 10.1 Dollars to Cents Conversion
    • 10.2 Different Ways to Make the Same Amount
    • 10.3 Using Least Number of Coins
    • 10.4 Using One Dollar
    • 10.5 Amounts of Change from Purchase
    • 10.6 Solving Story Problems
11. 11 Exploring Mental Addition
    • 11.1 Add by Tens
    • 11.2 Add by Ones
    • 11.3 Add by Tens and by Ones
    • 11.4 How to Use a Hundred Chart
    • 11.5 Add Numbers Ending in Zero
    • 11.6 Looking for Pattern in Problem Solving
12. 12 Exploring Mental Subtraction
    • 12.1 How to Subtract by Tens
    • 12.2 Make One Hundred
    • 12.3 Using the Hundred Chart to Subtract
    • 12.4 Use Addition to Subtraction
    • 12.5 Subtracting Multiples of 10
    • 12.6 Solving Problems
13. 13 Two-Digit Number Addition
    • 13.1 Using Regrouping in Addition
    • 13.2 Models for One-Digit Number Addition
    • 13.3 Add One-Digit and Two-Digit Numbers
    • 13.4 Modeling Adding Two-Digit Numbers
    • 13.5 Adding Two-Digit Numbers
    • 13.6 Complete Addition Sentences
    • 13.7 Add Vertically and Horizontally
    • 13.8 Three Number Additions
    • 13.9 Use Pictures and Write Number Sentences in Problem Solving
14. 14 Use of Addition and Subtraction
    • 14.1 Adding Money
    • 14.2 Estimate the sums
    • 14.3 Exploring Ways to Add
    • 14.4 Subtracting Money
    • 14.5 Estimate the Differences
    • 14.6 Identifying Ways to Subtract
    • 14.7 Guess and Try, Checking, and Revising in Problem Solving
15. 15 Introduction to Geometry Part I
    • 15.1 Introducing Vertices, Edges, and Faces
    • 15.2 Identifying Plane Shapes
    • 15.3 Identifying Solid Figures
    • 15.4 Identify 2 and 3 Dimensional Shape and Solids
    • 15.5 Connecting Plane Shapes to Solid Figures
    • 15.6 Connecting Shapes
16. 16 Introduction to Geometry Part II
    • 16.1 Cutting Shapes Apart in Geometry
    • 16.2 Identifying Congruence
    • 16.3 Slide, Rotate, and Flip Shape
    • 16.4 Identifying Symmetry
    • 16.5 Using Reasoning in Problem Solving
17. 17 Understanding Fractions
    • 17.1 Parts of a Whole
    • 17.2 Unit Fractions
    • 17.3 Non-Unit Fractions
    • 17.4 Estimate the Fraction of a Whole
    • 17.5 Find the Fractions in a Group
    • 17.6 Use Fractions to Solve Problems
    • 17.7 Ordering and Comparing Fractions
18. 18 Measurement: Length, Area, and Perimeter
    • 18.1 Attributes of Measurement
    • 18.2 Measure Length
    • 18.3 Measure Length: Use Non-Standard Unit
    • 18.4 Use Inches, Feet, and Yards to Measure Length
    • 18.5 Use Centimeters and Meters in Measure Length
    • 18.6 Compare and Convert Meter, Centimeter, and Millimeter
    • 18.7 Perimeter
    • 18.8 Area
    • 18.9 Using Objects in Problem Solving
19. 19 Measurement: Weight and Capacity
    • 19.1 Measuring Capacity
    • 19.2 Understanding Cups, Pints, and Quarts
    • 19.3 Compare and Convert Cups, Pints, and Quarts
    • 19.4 Understanding Liter and Milliliter
    • 19.5 Compare and Convert Liter and Milliliter
    • 19.6 Measuring Weight
    • 19.7 Understanding Pounds and Ounces
    • 19.8 Compare and Convert Pounds and Ounces
    • 19.9 Understanding Grams and Kilograms
    • 19.10 Compare and Convert Grams and Kilograms
    • 19.11 Using Objects in Problem Solving
20. 20 Understand Time and Temperature Part I
    • 20.1 Time Related Words
    • 20.2 Hour, Half-hour, and Quarter-hour
    • 20.3 Tell Time to Nearest Hour, Half-hour, and Quarter-hour
    • 20.4 Tell Time at Five Minute Intervals
    • 20.5 Time Before and After the Hour
21. 21 Understand Time and Temperature Part II
    • 21.1 Estimate Elapsed Time
    • 21.2 Read the Calendar
    • 21.3 Read Temperature in Fahrenheit and Celsius
    • 21.4 Relate Time Units
    • 21.5 Problem Solving
22. 22 Probability, Data, and Graphs
    • 22.1 Data and Graphing Data
    • 22.2 Interpret Pictographs
    • 22.3 Use Bar Graphs
    • 22.4 Explore Coordinate Graphs
    • 22.5 Likely and Unlikely Events
    • 22.6 Identifying Certain, Probable, and Impossible Events
    • 22.7 Using Data in Problem Solving
    • 22.8 Find Median, Mode, and Range
23. 23 Understanding Patterns and Numbers to 1,000 Part I
    • 23.1 Read and Write Numbers to 1,000
    • 23.2 Count by Hundreds, Tens, and Ones
    • 23.3 Reading and Writing Numbers to 1,000
    • 23.4 Change the Numbers by Tens and Hundreds
    • 23.5 Identify Number Patterns on Hundred Chart
    • 23.6 Numbers Comparison
24. 24 Understanding Patterns and Numbers to 1,000 Part II
    • 24.1 Numbers: Before, After, And in Between
    • 24.2 Order of Numbers
    • 24.3 Skip Counting
    • 24.4 Estimating and Rounding to Nearest 10
    • 24.5 Estimating Sum of Two Numbers
    • 24.6 Looking for Patterns in Problem Solving
25. 25 Three-Digit Addition and Subtraction
    • 25.1 Using Mental Math
    • 25.2 How to Estimate Sums
    • 25.3 Using Models for Three-Digit Number Addition
    • 25.4 Exploring Adding Three-Digit Numbers
    • 25.5 Finding Missing Parts Using Mental Math
    • 25.6 Estimate the Differences
    • 25.7 Identifying Models for Subtraction
    • 25.8 Subtraction Using Three-Digit Numbers
    • 25.9 Compare Addition and Subtraction Sentences
    • 25.10 Balance Addition and Subtraction Sentences
    • 25.11 Making Graphs in Solving Problems
26. 26 Introducing Multiplication
    • 26.1 Understanding Multiplication as Repeated Addition
    • 26.2 Multiplication Facts of 0 to 2
    • 26.3 Multiplication Facts of 3 to 5
    • 26.4 How to Build Arrays
    • 26.5 Stories of Multiplication
    • 26.6 Vertical Form of Multiplication
    • 26.7 Exploring Multiplication in any Order
    • 26.8 Multiplication by Using Number Line
    • 26.9 Draw Pictures and Write Multiplication Sentences
27. 27 Introducing Division
    • 27.1 Understanding Division as Sharing
    • 27.2 Understanding Division as Repeated Subtraction
    • 27.3 Stories Using Division
    • 27.4 Division by Using a Number Line
    • 27.5 Divisors and Quotients
    • 27.6 Relating Multiplication and Division
    • 27.7 Make a Table and Look for a Pattern