Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Quarter 1
Quarter 2
Quarter 3
Quarter 4
Develop fluency to add and subtract within 20 using mental strategies. By the end of Grade 2, know from memory all sums of two one-digit numbers.

Review grade 1 facts: +/- 0, 1, 2; make ten; +/- 10; doubles
Develop fluency to add and subtract within 20 using mental strategies. By the end of Grade 2, know from memory all sums of two one-digit numbers.

Make ten and some more

(i.e. 8 + 5 = 13, 9 + 6 = 15)
Develop fluency to add and subtract within 20 using mental strategies. By the end of Grade 2, know from memory all sums of two one-digit numbers.

Near doubles

(i.e. 5 + 6 = 11, 8 + 7 = 15)
Fluently add and subtract within 20 using mental strategies. By the end of Grade 2, know from memory all sums of two one-digit numbers.

All facts
Chapters 2, 3, 4, 5, and 6
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Chapter 7
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Chapter 8
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Grade 1 Fluency SAW3 Resources
SAW3 ResourcesMake 10 and Some MoreAddition Lesson, Resources, PowerPoint Subtraction Lesson, Resources, PowerPointFact Cards and LogsGames
SAW3 ResourcesNear DoublesAdditionLesson, PowerPoint Subtraction Lesson, Resources, PowerPointFact Cards and LogsGames
SAW3 ResourcesHelping FactsAddition Lesson, Resources, PowerPoint SubtractionLesson, PowerPointFact Cards And LogsGames

Increasing Rigor

  • (making 20) Beth had a pack of 20 pencils. The pencils were two different colors. Show all the combinations of pencils she could have that equal 20. Draw pictures and write equations to support your answer.
  • If you don’t know 9 + 3, how can knowing 10 + 2 help you?
  • If you don’t know 9 + 8, is there a doubles fact that can help you? How?
  • (use of strategies) If you don’t know the sum of 8 + 5 (or any other fact), what are some good strategies you can use to help you figure out the answer? (finger counting isn’t appropriate, looking for mental math ideas) Have students think, pair, share ideas. Write all ideas on board for class to see.
  • (making 10) Meghan wants to have 10 donuts in each box. How many more donuts does she need to put in each of the following boxes? A box with 9 donuts? A box with 8 donuts? A box with 3 donuts?
  • (doubling) Sherry already has 4 erasers. Now her goal is to collect 20 in all. She got 4 more on Monday and 8 on Tuesday. How many does she have in all? How many more does she need to make her goal?
  • (halving) Connie and Cheryl are twins. Connie’s hair is twice the length of Cheryl’s hair. Connie has decided that she wants to cut her hair to be the same length as her sister’s. Connie’s hair dresser measured her hair and it is 16 inches long. How long will the twins’ hair be?

About the Math

Instruction in basic facts should focus on making sense, using strategies for remembering facts, and seeing relationships. Students need to understand the relationship of addition and subtraction as well as the commutative property. When students see the relationships such that 3 + 5 = 8 and that 5 + 3 = 8, they lessen the number of facts that need to be learned. Recalling basic facts takes time. Instant recall of the basic facts varies from child to child. The use of timed tests is discouraged as a method of learning. Timed tests are only appropriate after students have indicated that they know the facts. Basic facts allow students to be accurate and efficient in computation and mental math. Essential vocabulary for this standard includes: Doubles, Make ten, Near doubles, sum, difference, addend, count-on, count-back, think addition, strategy, part, total, subtract, add, pattern, tens, ones, digit, addition, and subtraction (online dictionary, visual mathematics dictionary, HCPSS Vocabulary Cards)

The Illustrative Mathematics tasks below demonstrate expectation for this standard.


Rich Tasks for Multiple Means of Engagement, Expression, and Representation (UDL)


LINK TO ADDITIONAL BASIC FACTS ACTIVITIES

Print resources:

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Mental Math in the Primary Grades
Pages 3-43

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Math Intervention, PreK-2
Adding Doubles and Near Doubles
pg 125-126
Adding Doubles and Near Doubles,
pages 125-130
Fact Families, pages 131-136
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Nimble with Numbers 1-2
Pages 33-100
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Groundworks Reasoning with Numbers
Pages 64-72
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Navigating through Number and Operations
Park Your Car: Pages 49-51
Double Plus or Minus: Pages 62-64
Flip Two: Pages 65-67
Zooey Lunch: Pages 68-69

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Roads to Reasoning- Grade 2
Double Dessert, page 40
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Mini lessons for Math Practice
Pages17-22 and 128-132
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SuperSource: Snap Cubes, K-2
pages 70-73


Web Resources:

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Games and Centers
Lessons
Student Resources
Video Segments
Eleven More
Printable Game
Lesson 1: Counting Back
Doubles Bump
printable game
Make 10 StrategyYouTube: Math with Mr. Almeida

Four in a Row with Near Doubles Version 1
Printable Game
Lesson 5: Fact Families Lesson
Magic Triangles
Student Resource Sheet
Break Down to 10
YouTube: Math with Mr. Almeida
Four in a Row with Near Doubles Version 2
Printable Game

Four in a Row with Near Doubles Version 3
Rule It OutLesson/Game
Magic Square
Student Resource Sheet

Magic Star Puzzle
Student Resource Sheet
Addition and Subtraction Relationship
YouTube: Math with Mr. Almeida
Sum SenseOnline Game
M&M Counting Lesson
(Cache County Public Schools Utah)
Nine Plus
Student Resource Sheet
Use Known Sums to Solve
YouTube: Math with Mr. Almeida
Add and Subtract Games
Online Games
The Mystery of Zero Lesson
(Cache County Public Schools Utah)
Fact Family House
Student Resource Sheet

Interactive Ten Frame
Online Game
Vehicles Lesson
(Cache County Public Schools Utah)
Doubles Plus One
Student Resource Sheet

Alien Addition
Online Game

Doubles Minus One
Student Resource Sheet

Break Apart
Greg Tang Online Game
Doubles and Making 10

Doubles Plus Two
Student Resource Sheet

Math LimboGreg Tang Online Game10 pin & 15 pin

Doubles Memory
Student Resource Sheet

NumSkillGreg Tang Online Gameaddition up to 20

Doubles Path
Student Resource Sheet



Sum Search
Student Resource Sheet



Number Relationship Mat
Student resource Sheet



Near 20
Student Resource Sheet




Smart Sums
Greg Tang Student Resource




Smart Subtract
Greg Tang Student Resource



Ten Pin Limbo
Greg Tang Student Game



Sum Difference Puzzles
Greg Tang Student GameMaking 10



Two of Everything
Math Read Aloud Task Card



Smart Subtraction Greg Tang Student GameMaking 10Using Addition and Subtraction


Connecting Children's Literature:
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Two of Everything
by: Lily Toy Tong

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Mrs. Wishy-Washy
by: Joy Cowley

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Domino Addition
by: Lynette Long
12 Ways to Get to 11
by: Eve Merriam
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Math-erpieces
by: Greg Tang

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Ten Flashing Fireflies
by: Philemon Sturges

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Ready, Set, HOP!
by: Stuart Murphy
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Mouse Count
by: Ellen Stoll Walsh

Questions/Comments:

Contact John SanGiovanni at jsangiovanni@hcpss.org.