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Open Up Resources K–5 Math
Grade 2
Kindergarten
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5
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Contents
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Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
Unit 9
Grade 2
Google Slides
Unit 1: Adding, Subtracting, and Working with Data
Community Created Resources
Lesson 1
: Add and Subtract Within 10
Lesson 2
: Relate Addition and Subtraction within 10
Lesson 3
: Relate Addition and Subtraction within 20
Lesson 4
: Add and Subtract Your Way
Lesson 5
: Add Within 50
Lesson 6
: Center Day 1
Lesson 7
: Collect and Represent Data
Lesson 8
: Interpret Picture Graphs
Lesson 9
: Interpret Bar Graphs
Lesson 10
: Represent Data Using Picture Graphs and Bar Graphs
Lesson 11
: Questions About Data
Lesson 12
: Center Day 2
Lesson 13
: Use Bar Graphs to Compare
Lesson 14
: Use Diagrams to Compare
Lesson 15
: Diagrams with All Kinds of Compare Problems
Lesson 16
: Solve All Kinds of Compare Problems
Lesson 17
: Center Day 3
Lesson 18
: Class Surveys
Unit 2: Adding and Subtracting Within 100
Community Created Resources
Lesson 1
: Add and Subtract to Compare
Lesson 2
: Find the Unknown Addend
Lesson 3
: Add or Subtract to Solve Story Problems
Lesson 4
: Center Day 1
Lesson 5
: Subtract Your Way
Lesson 6
: Compare Methods for Subtraction
Lesson 7
: Subtract Two Digits
Lesson 8
: Different Ways to Decompose
Lesson 9
: Add and Subtract Within 100
Lesson 10
: Center Day 2
Lesson 11
: How Do You Solve Story Problems?
Lesson 12
: Story Problems and Diagrams
Lesson 13
: Story Problems and Equations
Lesson 14
: Solve It Your Way
Lesson 15
: Center Day 3
Lesson 16
: Our Market’s Inventory
Unit 3: Measuring Length
Community Created Resources
Lesson 1
: Standard Units of Measure
Lesson 2
: Measure in Centimeters
Lesson 3
: Create and Use a Ruler
Lesson 4
: Measure and Estimate in Centimeters
Lesson 5
: Measure in Meters
Lesson 6
: Compare Reptile Lengths in Story Problems
Lesson 7
: Center Day 1
Lesson 8
: What is an Inch?
Lesson 9
: From Feet to Inches
Lesson 10
: Measure with a Torn Tape
Lesson 11
: Saree Silk Stories: Necklaces and Bracelets
Lesson 12
: Saree Silk Stories: Friendship Bracelets
Lesson 13
: Center Day 2
Lesson 14
: What is a Line Plot?
Lesson 15
: Create Line Plots
Lesson 16
: Interpret Measurement Data
Lesson 17
: Center Day 3
Lesson 18
: Make a Yard Stick
Unit 4: Addition and Subtraction on the Number Line
Community Created Resources
Lesson 1
: Whole Numbers on the Number Line
Lesson 2
: Features of a Number Line
Lesson 3
: Unlabeled Tick Marks
Lesson 4
: Compare Numbers on a Number Line
Lesson 5
: Estimate on a Number Line
Lesson 6
: Center Day 1
Lesson 7
: Addition and Subtraction on the Number Line
Lesson 8
: Equations on a Number Line
Lesson 9
: The Difference Between Numbers
Lesson 10
: Place Value and the Number Line
Lesson 11
: Different Ways to Add and Subtract
Lesson 12
: Equations with Unknowns
Lesson 13
: Represent Story Problems
Lesson 14
: Center Day 2
Lesson 15
: Riddles
Unit 5: Numbers to 1,000
Community Created Resources
Lesson 1
: How Do We Compose a Hundred?
Lesson 2
: Make Hundreds
Lesson 3
: Compose Three-digit Numbers
Lesson 4
: Write Three-digit Numbers
Lesson 5
: Expanded Form of Numbers
Lesson 6
: Represent Numbers in Different Ways
Lesson 7
: Center Day 1
Lesson 8
: Three-digit Numbers on the Number Line
Lesson 9
: Compare Numbers on the Number Line
Lesson 10
: Place Value Comparisons (Part 1)
Lesson 11
: Place Value Comparisons (Part 2)
Lesson 12
: Order Numbers
Lesson 13
: Center Day 2
Lesson 14
: Hundreds of Objects
Unit 6: Geometry, Time, and Money
Community Created Resources
Lesson 1
: Identify and Sort Shapes
Lesson 2
: Draw Shapes
Lesson 3
: Specific Side Lengths
Lesson 4
: Solid Shapes
Lesson 5
: Center Day 1
Lesson 6
: Compose and Decompose Shapes
Lesson 7
: Make Halves, Thirds, and Fourths
Lesson 8
: Are All Pieces Created Equal?
Lesson 9
: You Ate the Whole Thing
Lesson 10
: Center Day 2
Lesson 11
: Tell Time with Halves and Quarters
Lesson 12
: Count by 5 to Tell Time
Lesson 13
: Is It a.m. or p.m.?
Lesson 14
: Center Day 3
Lesson 15
: Identify Pennies, Nickels, and Dimes
Lesson 16
: Identify Quarters
Lesson 17
: Let’s Make a Dollar
Lesson 18
: Money Problems
Lesson 19
: More Money Problems
Lesson 20
: Center Day 4
Lesson 21
: Pattern Block Puzzles
Unit 7: Adding and Subtracting Within 1,000
Community Created Resources
Lesson 1
: Compare, Count on, and Count Back
Lesson 2
: Add and Subtract With Tens and Hundreds
Lesson 3
: Count on or Count Back to Subtract
Lesson 4
: Add and Subtract Three-digit Numbers in Different Ways
Lesson 5
: Center Day 1
Lesson 6
: Use a Ten to Add Within 1,000
Lesson 7
: Compose a Larger Unit
Lesson 8
: Compose Tens and Hundreds to Add
Lesson 9
: Add Three-digit Numbers
Lesson 10
: Add Within 1,000
Lesson 11
: Center Day 2
Lesson 12
: Decompose to Subtract
Lesson 13
: Decompose Tens or Hundreds
Lesson 14
: Think Before You Subtract
Lesson 15
: Decompose a Ten and a Hundred to Subtract
Lesson 16
: Subtract Within 1,000
Lesson 17
: Center Day 3
Lesson 18
: Paint Splattered Bar Graph
Unit 8: Equal Groups
Community Created Resources
Lesson 1
: Can You Share?
Lesson 2
: Partners Make Pairs
Lesson 3
: Is it Odd or Even?
Lesson 4
: Decompose Even and Odd Numbers
Lesson 5
: Patterns With Even and Odd Numbers
Lesson 6
: Center Day 1
Lesson 7
: What is an Array?
Lesson 8
: Count Columns and Objects in Columns
Lesson 9
: A Sum of Equal Addends
Lesson 10
: Write Expressions and Equations to Represent Arrays
Lesson 11
: Arrays and Rectangles
Lesson 12
: Partition Rectangles Into Squares
Lesson 13
: Center Day 2
Unit 9: Putting It All Together
Community Created Resources
Lesson 1
: Sums and Differences Within 20
Lesson 2
: Fluency Flip
Lesson 3
: Measure on a Map
Lesson 4
: Measure and Plot
Lesson 5
: Compose and Decompose Numbers Within 1,000
Lesson 6
: Represent Numbers With Expressions
Lesson 7
: Add and Subtract Within 1,000
Lesson 8
: Add and Subtract Within 100
Lesson 9
: Sort the Story Problems
Lesson 10
: What’s the Question?
Lesson 11
: All About Tape Diagrams
Lesson 12
: What’s the Story?
Lesson 13
: Let’s Solve Our Story Problems
