Table of Contents

Unit 1 Operations and Algebraic Thinking: Addition and Strategies
 OA21 The Next Number
 OA22 Addition
 OA23 Adding by Counting On
 OA24 Even and Odd Numbers
 OA25 Patterns with Even and Odd Numbers
 OA26 The Next or Previous Even or Odd Number
 OA27 Order in Adding
 OA28 First Word Problems
 OA29 Equal (=) and Not Equal (≠)
 OA210 Using Doubles to Add (1)
 OA211 Using Doubles to Add (2)

Unit 2 Operations and Algebraic Thinking: Using Number Lines for Addition and Subtraction
 OA212 Distance from 0 on a Number Line
 OA213 Addition Using a Number Line
 0A214 Making a Number Line to Add
 OA215 Number Words from 0 to 10
 OA216 Number Words from 0 to 20
 OA217 Numbers from 10 to 19
 OA218 Using 10 to Add
 OA219 Pairs of Numbers That Add to 10
 OA220 Addition That Makes More Than 10 (1)
 OA221 Addition That Makes More Than 10 (2)
 OA222 Using Pictures to Subtract
 OA223 Subtraction Using a Number Line
 OA224 Making a Number Line to Subtract
 OA225 First Word ProblemsSubtraction

Unit 3 Operations and Algebraic Thinking: Unknowns in Addition
 OA226 Add Two Ways Using a Number Line
 OA227 Add Two Ways by Counting On
 OA228 Blocks in a Bag
 OA229 Find the Missing Addend on a Number Line
 OA230 Find the Missing Addend by Counting On
 OA231 Word Problems with One Addend Missing (1)
 OA232 Word Problems with One Addend Missing (2)
 OA233 Word Problems with Both Addends Missing
 OA234 More Than and Counting On (1)
 OA235 More Than and Counting On (2)

Unit 4 Operations and Algebraic Thinking: Unknowns in Subtraction
 OA236 Adding and How Many More
 OA237 Subtract Using Addition
 OA238 Subtract by Counting On
 OA239 Subtracting and How Many More
 OA240 Compare Using Subtraction
 OA241 Missing Numbers in Subtraction
 OA242 Missing Total in Subtraction
 OA243 Subtraction Word Problems

Unit 5 Number and Operations in Base Ten: Addition Using Place Value
 NBT21 Tens and Ones Blocks
 NBT22 Hundreds Charts
 NBT23 Ordering 2Digit Numbers
 NBT24 Expanded Form
 NBT25 Adding a 1Digit Number to a 2Digit Number
 NBT26 Adding 10
 NBT27 Counting by Tens
 NBT28 Using Base Ten Blocks to Add (No Regrouping)
 NBT29 Making 10 to Add (1Digit to 2Digit)
 NBT210 Using Base Ten Blocks to Add (Regrouping)
 NBT211 Making 10 to Add (2Digit to 2Digit)
 NBT212 Using Place Value to Add (No Regrouping)
 NBT213 Using Place Value to Add (Regrouping)
 NBT214 Addition Word Problems

Unit 6 Number and Operations in Base Ten: Subtraction Using Place Value
 NBT215 Subtract by Adding on a Number Line
 NBT216 Subtracting to Make 10 and Subtracting 10
 NBT217 Subtracting a Multiple of 10
 NBT218 Subtracting from a Multiple of 10
 NBT219 Subtract by Adding
 NBT220 Using Base Ten Blocks to Subtract
 NBT221 Using Place Value to Subtract (No Regrouping)
 NBT222 Regrouping for Subtraction
 NBT223 Using Place Value to Subtract (Regrouping)
 NBT224 Subtraction Word Problems

Unit 7 Measurement and Data: Measuring Length in Metric Units
 MD21 Length, Width, and Height
 MD22 Measuring Length
 MD23 Measuring in Centimeters
 MD24 Length and Subtraction
 MD25 Measuring to the Closest Centimeter
 MD26 Estimating in Centimeters
 MD27 Estimating in Meters
 MD28 Making a Ruler

Unit 8 Measurement and Data: Measuring and Operations
 MD29 Drawing Lengths
 MD210 Choosing Units
 MD211 Comparing Lengths
 MD212 Subtraction and Length
 MD213 Addition and Length
 MD214 Addition and Length (Advanced)
 MD215 Finding Lengths from Differences
 MD216 Solving Problems