IXL skill plan | 2nd grade plan for Math Expressions 2013 Common Core

Skill plan for Math Expressions 2013 Common Core - 2nd grade

IXL provides skill alignments with recommended IXL skills for each chapter. Find the IXL skills that are right for you below!

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1	Unit 1 Addition and Subtraction Within 20
Big Idea 1 - Strategies for Addition and Subtraction
1-1: Represent Addition and Subtraction		1. Addition and subtraction - ways to make a number - up to 20 Also consider: • Add one-digit numbers • Write addition sentences to describe pictures - sums to 20 • Write subtraction sentences to describe pictures - up to 18
1-1: Represent Addition and Subtraction
1. Addition and subtraction - ways to make a number - up to 20 Also consider: • Add one-digit numbers • Write addition sentences to describe pictures - sums to 20 • Write subtraction sentences to describe pictures - up to 18

1-2: Relate Addition and Subtraction		1. Related addition facts 2. Related subtraction facts 3. Fact families
1-2: Relate Addition and Subtraction
1. Related addition facts 2. Related subtraction facts 3. Fact families

1-3: Make-a-Ten Strategies		• Coming soon: Make 10 to add
1-3: Make-a-Ten Strategies
• Coming soon: Make 10 to add

1-4: Relate Unknown Addends and Subtraction		1. Complete the addition sentence - sums to 20 Also consider: • Subtract a one-digit number from a two-digit number up to 18
1-4: Relate Unknown Addends and Subtraction
1. Complete the addition sentence - sums to 20 Also consider: • Subtract a one-digit number from a two-digit number up to 18

1-5: More Practice with Unknown Addends and Teen Totals		1. Relate addition and subtraction sentences Also consider: • Balance addition equations - sums to 20
1-5: More Practice with Unknown Addends and Teen Totals
1. Relate addition and subtraction sentences Also consider: • Balance addition equations - sums to 20

1-6: Odd and Even Numbers		1. Skip-counting sequences - count by twos 2. Even or odd 3. Add doubles - complete the sentence Also consider: • Skip-counting by twos
1-6: Odd and Even Numbers
1. Skip-counting sequences - count by twos 2. Even or odd 3. Add doubles - complete the sentence Also consider: • Skip-counting by twos

1-7: Strategies Using Doubles		1. Add doubles 2. Subtract doubles 3. Add using doubles plus or minus one
1-7: Strategies Using Doubles
1. Add doubles 2. Subtract doubles 3. Add using doubles plus or minus one

1-8: Equations, Equation Chains, and Vertical Form		1. Add and subtract numbers up to 20 2. Complete the subtraction sentence - up to 20 Also consider: • Addition and subtraction sentences up to 20: which is true?
1-8: Equations, Equation Chains, and Vertical Form
1. Add and subtract numbers up to 20 2. Complete the subtraction sentence - up to 20 Also consider: • Addition and subtraction sentences up to 20: which is true?

1-9: Add Three or Four Addends		1. Add three one-digit numbers 2. Add four one-digit numbers
1-9: Add Three or Four Addends
1. Add three one-digit numbers 2. Add four one-digit numbers
Big Idea 2 - Addition and Subtraction Situations
1-10: Add To and Take From Word Problems		1. Addition and subtraction word problems with pictures - up to 10 2. Addition and subtraction word problems - up to 10
1-10: Add To and Take From Word Problems
1. Addition and subtraction word problems with pictures - up to 10 2. Addition and subtraction word problems - up to 10

1-11: Add To and Take From Problems — Unknown in All Positions		1. Addition word problems - sums to 20 2. Subtraction word problems - up to 18
1-11: Add To and Take From Problems — Unknown in All Positions
1. Addition word problems - sums to 20 2. Subtraction word problems - up to 18

1-12: Put Together/Take Apart Problems		1. Addition sentences for word problems - sums to 20 2. Subtraction sentences for word problems - up to 18
1-12: Put Together/Take Apart Problems
1. Addition sentences for word problems - sums to 20 2. Subtraction sentences for word problems - up to 18

1-13: Special Put Together/Take Apart Problems		1. Ways to make a number with addition - sums to 20 2. Ways to subtract - up to 20 Also consider: • Ways to make a number with addition - sums to 10 • Ways to subtract - up to 10
1-13: Special Put Together/Take Apart Problems
1. Ways to make a number with addition - sums to 20 2. Ways to subtract - up to 20 Also consider: • Ways to make a number with addition - sums to 10 • Ways to subtract - up to 10

1-14: Compare Word Problems
1-14: Compare Word Problems


1-15: More Compare Word Problems
1-15: More Compare Word Problems


1-16: Mixed Word Problems		1. Addition and subtraction word problems - up to 20
1-16: Mixed Word Problems
1. Addition and subtraction word problems - up to 20
Big Idea 3 - More Complex Situations
1-17: Problems with Not Enough, Extra, or Hidden Information
1-17: Problems with Not Enough, Extra, or Hidden Information


1-18: More Complex Compare Problems
1-18: More Complex Compare Problems


1-19: Two-Step Word Problems		1. Add three one-digit numbers: word problems Also consider: • Addition and subtraction - balance equations - up to 20
1-19: Two-Step Word Problems
1. Add three one-digit numbers: word problems Also consider: • Addition and subtraction - balance equations - up to 20

1-20: Mixed Word Problems		1. Addition and subtraction sentences for word problems - up to 20 Also consider: • Add four or more one-digit numbers: word problems
1-20: Mixed Word Problems
1. Addition and subtraction sentences for word problems - up to 20 Also consider: • Add four or more one-digit numbers: word problems

1-21: Focus on Mathematical Practices		1. Interpret data in tables
1-21: Focus on Mathematical Practices
1. Interpret data in tables

2	Unit 2 Addition Within 200
Big Idea 1 - Use Place Value
2-1: Ones, Tens, Hundreds		1. Hundreds chart
2-1: Ones, Tens, Hundreds
1. Hundreds chart

2-2: Draw Quick Tens and Quick Hundreds		1. Add multiples of 10
2-2: Draw Quick Tens and Quick Hundreds
1. Add multiples of 10

2-3: Represent Numbers in Different Ways		1. Place value models up to 120 2. Convert to/from a number - tens and ones 3. Writing numbers up to 100 in expanded form 4. Writing numbers up to 100 in words - convert words to digits 5. Writing numbers up to 100 in words - convert digits to words
2-3: Represent Numbers in Different Ways
1. Place value models up to 120 2. Convert to/from a number - tens and ones 3. Writing numbers up to 100 in expanded form 4. Writing numbers up to 100 in words - convert words to digits 5. Writing numbers up to 100 in words - convert digits to words

2-4: Combine Ones, Tens, and Hundreds		1. Add 1 or 10 2. Input/output tables - add 10 Also consider: • Count by tens and hundreds
2-4: Combine Ones, Tens, and Hundreds
1. Add 1 or 10 2. Input/output tables - add 10 Also consider: • Count by tens and hundreds

2-5: Compare Numbers Within 200		1. Comparing numbers up to 100 Also consider: • Put numbers up to 100 in order
2-5: Compare Numbers Within 200
1. Comparing numbers up to 100 Also consider: • Put numbers up to 100 in order
Big Idea 2 - Add 2-Digit Numbers
2-6: Explore 2-Digit Addition		1. Addition word problems - up to two digits
2-6: Explore 2-Digit Addition
1. Addition word problems - up to two digits

2-7: Addition — Show All Totals Method		1. Write the addition sentence - up to two digits Also consider: • Use models to add two-digit numbers - without regrouping • Add two-digit numbers without regrouping - sums to 100
2-7: Addition — Show All Totals Method
1. Write the addition sentence - up to two digits Also consider: • Use models to add two-digit numbers - without regrouping • Add two-digit numbers without regrouping - sums to 100

2-8: Addition — New Groups Below Method		1. Use models to add two-digit numbers - with regrouping 2. Add two-digit numbers with regrouping - sums to 100 Also consider: • Use models to add a two-digit and a one-digit number - with regrouping • Add a two-digit and a one-digit number - with regrouping • Regroup tens and ones - ways to make a number
2-8: Addition — New Groups Below Method
1. Use models to add two-digit numbers - with regrouping 2. Add two-digit numbers with regrouping - sums to 100 Also consider: • Use models to add a two-digit and a one-digit number - with regrouping • Add a two-digit and a one-digit number - with regrouping • Regroup tens and ones - ways to make a number

2-9: Practice Addition with Sums over 100		1. Add two-digit numbers - sums to 200 Also consider: • Regroup tens and ones
2-9: Practice Addition with Sums over 100
1. Add two-digit numbers - sums to 200 Also consider: • Regroup tens and ones

2-10: Choose an Addition Method		1. Addition input/output tables - up to two digits Also consider: • Ways to make a number using addition
2-10: Choose an Addition Method
1. Addition input/output tables - up to two digits Also consider: • Ways to make a number using addition
Big Idea 3 - Money and Fluency for Addition Within 100
2-11: Buy with Pennies and Dimes		1. Count money up to $2 - pennies, dimes, and dollar bills only
2-11: Buy with Pennies and Dimes
1. Count money up to $2 - pennies, dimes, and dollar bills only

2-12: Pennies, Nickels, and Dimes		1. Skip-counting by fives 2. Count money - pennies, nickels, and dimes only
2-12: Pennies, Nickels, and Dimes
1. Skip-counting by fives 2. Count money - pennies, nickels, and dimes only

2-13: Fluency: Addition Within 100		1. Add money - up to $1
2-13: Fluency: Addition Within 100
1. Add money - up to $1

2-14: Add Three or Four 2-Digit Addends		1. Add three numbers up to two digits each 2. Add four numbers up to two digits each Also consider: • Add three numbers up to two digits each: word problems • Add four numbers up to two digits each: word problems
2-14: Add Three or Four 2-Digit Addends
1. Add three numbers up to two digits each 2. Add four numbers up to two digits each Also consider: • Add three numbers up to two digits each: word problems • Add four numbers up to two digits each: word problems

2-15: Focus on Mathematical Practices		1. Purchases up to $2 - do you have enough money Also consider: • Skip-counting stories
2-15: Focus on Mathematical Practices
1. Purchases up to $2 - do you have enough money Also consider: • Skip-counting stories

3	Unit 3 Length and Shapes
Big Idea 1 - Length and Shapes
3-1: Measure Length		1. Measure using a centimeter ruler
3-1: Measure Length
1. Measure using a centimeter ruler

3-2: Recognize and Draw Shapes		1. Select two-dimensional shapes 2. Count sides and vertices 3. Square corners Also consider: • Equal sides
3-2: Recognize and Draw Shapes
1. Select two-dimensional shapes 2. Count sides and vertices 3. Square corners Also consider: • Equal sides

3-3: Estimate and Measure		1. Perimeter of rectangles
3-3: Estimate and Measure
1. Perimeter of rectangles

3-4: Draw, Estimate, and Measure		1. Perimeter
3-4: Draw, Estimate, and Measure
1. Perimeter

3-5: Draw Using Faces		1. Front, side, and top views 2. Name the two-dimensional shape Also consider: • Identify faces of three-dimensional shapes
3-5: Draw Using Faces
1. Front, side, and top views 2. Name the two-dimensional shape Also consider: • Identify faces of three-dimensional shapes
Big Idea 2 - Estimate, Measure, and Make Line Plots
3-6: Estimate and Measure with Centimeters		1. Which metric unit of length is appropriate? 2. Interpret line plots
3-6: Estimate and Measure with Centimeters
1. Which metric unit of length is appropriate? 2. Interpret line plots

3-7: Estimate and Measure with Inches		1. Measure using an inch ruler Also consider: • Which customary unit of length is appropriate: inches, feet, or yards?
3-7: Estimate and Measure with Inches
1. Measure using an inch ruler Also consider: • Which customary unit of length is appropriate: inches, feet, or yards?

3-8: Measure for and Make Line Plots		1. Create line plots Also consider: • Customary units of length: word problems • Metric units of length: word problems
3-8: Measure for and Make Line Plots
1. Create line plots Also consider: • Customary units of length: word problems • Metric units of length: word problems

3-9: Focus on Mathematical Practices		1. Compose two-dimensional shapes Also consider: • Find the next shape in a repeating pattern
3-9: Focus on Mathematical Practices
1. Compose two-dimensional shapes Also consider: • Find the next shape in a repeating pattern

This document includes the IXL® skill alignments to Houghton Mifflin Harcourt's Math Expressions 2013 Common Core curriculum. IXL provides skill alignments as a service to teachers, students, and parents. The skill alignments are provided by IXL and are not affiliated with, sponsored by, reviewed, approved or endorsed by Houghton Mifflin Harcourt or any other third party. IXL® and IXL Learning® are registered trademarks of IXL Learning, Inc. All other intellectual property rights (e.g., unregistered and registered trademarks and copyrights) are the property of their respective owners.