Reteach Book. Grade 2 PROVIDES. Tier 1 Intervention for Every Lesson

Transcription

1 Book PROVIDES Tier 1 Intervention for Every Lesson

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3 Contents CRITICAL AREA 1: Number Sense and Place Value Chapter 1: Number Concepts 1.1 Algebra Even and Odd Numbers... R1 1.2 Algebra Represent Even Numbers... R2 1.3 Understand Place Value... R3 1.4 Expanded Form... R4 1.5 Different Ways to Write Numbers... R5 1.6 Algebra Different Names for Numbers... R6 1.7 Problem Solving Tens and Ones... R7 1.8 Counting Patterns Within R8 1.9 Counting Patterns Within 1, R9 Chapter 2: Numbers to 1, Group Tens as Hundreds...R Explore 3-Digit Numbers...R Model 3-Digit Numbers...R Hundreds, Tens, and Ones...R Place Value to 1,000...R Number Names...R Different Forms of Numbers...R Algebra Different Ways to Show Numbers...R Count On and Count Back by 10 and R Algebra Number Patterns...R Problem Solving Compare Numbers...R Algebra Compare Numbers...R21 iii

4 CRITICAL AREA 2: Addition and Subtraction Chapter 3: Basic Facts and Relationships 3.1 Use Doubles Facts...R Practice Addition Facts...R Algebra Make a Ten to Add...R Algebra Add 3 Addends...R Algebra Relate Addition and Subtraction...R Practice Subtraction Facts...R Use Ten to Subtract...R Algebra Use Drawings to Represent Problems...R Algebra Use Equations to Represent Problems...R Problem Solving Equal Groups...R Algebra Repeated Addition...R32 Chapter 4: 2-Digit Addition 4.1 Break Apart Ones to Add...R Use Compensation...R Break Apart Addends as Tens and Ones...R Model Regrouping for Addition...R Model and Record 2-Digit Addition...R Digit Addition...R Practice 2-Digit Addition...R Rewrite 2-Digit Addition...R Problem Solving Addition...R Algebra Write Equations to Represent Addition...R Algebra Find Sums for 3 Addends...R Algebra Find Sums for 4 Addends...R44 iv

5 Chapter 5: 2-Digit Subtraction 5.1 Algebra Break Apart Ones to Subtract...R Algebra Break Apart Numbers to Subtract...R Model Regrouping for Subtraction...R Model and Record 2-Digit Subtraction...R Digit Subtraction...R Practice 2-Digit Subtraction...R Rewrite 2-Digit Subtraction...R Add to Find Differences...R Problem Solving Subtraction...R Algebra Write Equations to Represent Subtraction...R Solve Multistep Problems...R55 Chapter 6: 3-Digit Addition and Subtraction 6.1 Draw to Represent 3-Digit Addition...R Break Apart 3-Digit Addends...R Digit Addition: Regroup Ones...R Digit Addition: Regroup Tens...R Addition: Regroup Ones and Tens...R Estimation in 3-Digit Addition...R Problem Solving 3-Digit Subtraction...R Digit Subtraction: Regroup Tens...R Digit Subtraction: Regroup Hundreds...R Subtraction: Regroup Hundreds and Tens...R Regrouping with Zeros...R Estimation in 3-Digit Subtraction...R67 v

6 CRITICAL AREA 3: Measurement and Data Chapter 7: Money and Time 7.1 Dimes, Nickels, and Pennies...R Quarters...R Count Collections...R Show Amounts in Two Ways...R One Dollar...R Amounts Greater Than $1...R Problem Solving Money...R Time to the Hour and Half Hour...R Time to 5 Minutes...R Practice Telling Time...R A.M. and P.M....R Units of Time....R79 Chapter 8: Length in Customary Units 8.1 Measure With Inch Models...R Make and Use a Ruler...R Estimate Lengths in Inches...R Measure with an Inch Ruler...R Problem Solving Add and Subtract in Inches...R Measure in Inches and Feet...R Estimate Lengths in Feet...R Choose a Tool...R Display Measurement Data...R88 Chapter 9: Length in Metric Units 9.1 Measure with a Centimeter Model...R Estimate Lengths in Centimeters...R Measure with a Centimeter Ruler...R Problem Solving Add and Subtract Lengths...R Centimeters and Meters...R Estimate Lengths in Meters...R Measure and Compare Lengths...R95 vi

7 Chapter 10: Data 10.1 Collect Data...R Read Picture Graphs...R Make Picture Graphs...R Read Bar Graphs...R Make Bar Graphs...R Problem Solving Display Data... R101 CRITICAL AREA 4: Geometry and Fractions Chapter 11: Geometry and Fraction Concepts 11.1 Three-Dimensional Shapes...R Attributes of Three-Dimensional Shapes...R Build Three-Dimensional Shapes...R Two-Dimensional Shapes...R Angles in Two-Dimensional Shapes...R Sort Two-Dimensional Shapes...R Partition Rectangles...R Equal Parts...R Show Equal Parts of a Whole...R Describe Equal Parts...R Problem Solving Equal Shares...R112 vii

8 End-of-Year Resources Getting Ready for Grade 3 Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Lesson 6 Lesson 7 Lesson 8 Lesson 9 Lesson 10 Lesson 11 Lesson 12 Lesson 13 Lesson 14 Lesson 15 Lesson 16 Lesson 17 Lesson 18 Lesson 19 Lesson 20 Find Sums on an Addition Table GRR1 Estimate Sums: 2-Digit Addition GRR2 Estimate Sums: 3-Digit Addition GRR3 Estimate Differences: 2-Digit Subtraction GRR4 Estimate Differences: 3-Digit Subtraction GRR5 Order 3-Digit Numbers GRR6 Equal Groups of GRR7 Equal Groups of GRR8 Equal Groups of GRR9 Hands On: Size of Shares GRR10 Hands On: Number of Equal Shares.... GRR11 Solve Problems with Equal Shares GRR12 Hour Before and Hour After GRR13 Elapsed Time in Hours GRR14 Elapsed Time in Minutes GRR15 Hands On: Capacity Nonstandard Units GRR16 Describe Measurement Data GRR17 Fraction Models: Thirds and Sixths GRR18 Fraction Models: Fourths and Eighths GRR19 Compare Fraction Models GRR20 viii

9 Lesson 1.1 Algebra Even and Odd Numbers These are even numbers. They show pairs with no cubes left over. 4 is even. 6 is even. 8 is even. 10 is even. These are odd numbers. They show pairs with 1 cube left over. 3 is odd. 5 is odd. 7 is odd. 9 is odd. Count out the number of cubes. Make pairs. Then write even or odd odd even 11 odd 13 odd even R1 14 even

10 Lesson 1.2 Algebra Represent Even Numbers An even number of cubes will make two equal groups. Count 8 cubes. Put the cubes into two equal groups. Do the two groups have equal numbers of cubes? To check, match one to one. 8 = How many cubes are there in all? Complete the addition sentence to show the equal groups = = = = R2

11 Lesson 1.3 Understand Place Value 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 are digits. A digit's place in a number shows the value of the digit. 52 has two digits. The digit 5 is in the tens place. The digit 5 shows 5 tens. Its value is The digit 2 is in the ones place. The digit 2 shows 2 ones. Its value is 2. Circle the value of the underlined digit R3 4 40

12 Lesson 1.4 Expanded Form Show tens and ones in 43. Tens Ones How many tens? 4 tens How many ones? 3 ones 43 is 4 tens 3 ones 43 is Describe the number in two ways tens ones 6 tens 3 ones tens 7 ones R4 1 ten ones

13 Lesson 1.5 Different Ways to Write Numbers You can write numbers in different ways tens 6 ones + 6 twenty-six 26 ones teen words tens 1 one 11 eleven 1 ten 1 one 10 ten 1 ten 2 two 12 twelve 1 ten 2 ones 20 twenty 2 tens 3 three 13 thirteen 1 ten 3 ones 30 thirty 3 tens 4 four 14 fourteen 1 ten 4 ones 40 forty 4 tens 5 five 15 fifteen 1 ten 5 ones 50 fifty 5 tens 6 six 16 sixteen 1 ten 6 ones 60 sixty 6 tens 7 seven 17 seventeen 1 ten 7 ones 70 seventy 7 tens 8 eight 18 eighteen 1 ten 8 ones 80 eighty 8 tens 9 nine 19 nineteen 1 ten 9 ones 90 ninety 9 tens Write the number another way. 1. twenty fifty-six 7. 1 ten 8 ones eighteen Possible answers are given tens 7 ones 4. eighty-one tens 2 ones seventy-three 7 tens 3 ones R5

14 Lesson 1.6 Algebra Different Names for Numbers Here are some ways to show 28. Describe the tens and ones with words and addition tens 8 ones 1 8 Describe the blocks in two ways Describe the tens and ones with words and addition. 1 ten 18 ones Describe the tens and ones with words and addition. 0 tens 28 ones ten ones tens 2 ones 2 tens ones tens 17 ones tens ones R6 2 tens ones

15 Lesson 1.7 Problem Solving Tens and Ones Anya has 25 toys. She can put them away in boxes of 10 toys or as single toys. What are the different ways Anya can put away the toys? What do I need to find? the different ways Anya can put away the toys Look for a pattern. Unlock the Problem What information do I need to use? She can put them away in boxes of 10 single toys. toys or as 2 tens 1 5 ones 1 ten 1 15 ones Boxes of 10 toys Single toys tens 1 25 ones Find a pattern to solve. 1. Mr. Moore is buying 29 apples. He can buy them in packs of 10 apples or as single apples. What are the different ways Mr. Moore can buy the apples? Packs of 10 apples Single apples R7

16 Lesson 1.8 Counting Patterns Within 100 You can count different ways. Count by fives. 5, 10, 15, 20, 25, 30, 35 Count by tens. 10, 20, 30, 40, 50, 60 Count by fives. 1. 5, 10, 15, 20, 25, 30, , 25, 30, 35, 40, 45, , 60, 65, 70, 75, 80, 85 Count by tens , 20, 30, 40, 50, , 40, 50, 60, 70, 80, 90 R8

17 Counting Patterns Within 1,000 Lesson 1.9 You can count in different ways. Look for a pattern to use. Count by tens. 500, 510, 520, 530, 540, 550 Count by hundreds. 300, 400, 500, 600, 700, 800 Count by tens , 420, 430, 440, , 740, 750, 760, , 260, 270, 280, 290 Count by hundreds , 200, 300, 400, , 600, 700, 800, 900 R9