Math Lessons | Addition and Subtraction - less than 20 for Ages 3-9

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Common Core State Standards
- English Language Arts
  - Kindergarten
    - Reading: Literature
    - Reading: Informational Text
    - Reading: Foundational Skills
      - Print Concepts
        
        RF.K.1
        
        RF.K.1.A
        
        RF.K.1.B
        
        RF.K.1.C
        
        RF.K.1.D
      - Phonological Awareness
        
        RF.K.2
        
        RF.K.2.A
        
        RF.K.2.C
        
        RF.K.2.D
      - Phonics and Word Recognition
        
        RF.K.3
        
        RF.K.3.A
        
        RF.K.3.B
        
        RF.K.3.C
        
        RF.K.3.D
      - Fluency
        
        RF.K.4
    - Writing
      - Text Types and Purposes
        
        W.K.3
    - Language
      - Conventions of Standard English
        
        L.K.1
        
        L.K.1.B
        
        L.K.1.C
        
        L.K.1.D
        
        L.K.1.E
        
        L.K.1.F
        
        L.K.2
        
        L.K.2.A
        
        L.K.2.B
        
        L.K.2.C
        
        L.K.2.D
      - Vocabulary Acquisition and Use
        
        L.K.4
        
        L.K.4.A
        
        L.K.4.B
        
        L.K.5
        
        L.K.5.A
        
        L.K.5.B
        
        L.K.5.C
        
        L.K.5.D
    - Speaking & Listening
      - SL.K.2
      - SL.K.4
  - Grade 1
    - Reading: Literature
    - Reading: Informational Text
    - Reading: Foundational Skills
      - Print Concepts
        
        RF.1.1
        
        RF.1.1.A
      - Phonological Awareness
        
        RF.1.2
        
        RF.1.2.A
        
        RF.1.2.B
        
        RF.1.2.C
        
        RF.1.2.D
      - Phonics and Word Recognition
        
        RF.1.3
        
        RF.1.3.A
        
        RF.1.3.B
        
        RF.1.3.C
        
        RF.1.3.D
        
        RF.1.3.E
        
        RF.1.3.F
        
        RF.1.3.G
      - Fluency
        
        RF.1.4
        
        RF.1.4.A
        
        RF.1.4.C
    - Language
      - Conventions of Standard English
        
        L.1.1
        
        L.1.1.B
        
        L.1.1.C
        
        L.1.1.D
        
        L.1.1.E
        
        L.1.1.F
        
        L.1.1.G
        
        L.1.1.H
        
        L.1.1.I
        
        L.1.1.J
        
        L.1.2
        
        L.1.2.A
        
        L.1.2.B
        
        L.1.2.C
      - Vocabulary Acquisition and Use
        
        L.1.4
        
        L.1.4.A
        
        L.1.4.B
        
        L.1.4.C
        
        L.1.5
        
        L.1.5.A
        
        L.1.5.B
        
        L.1.5.C
        
        L.1.5.D
    - Speaking & Listening
      - SL.1.1
        
        SL.1.1.B
        
        SL.1.1.C
      - SL.1.4
  - Grade 2
  - Grade 3
    - Reading: Literature
    - Reading: Informational Text
    - Reading: Foundational Skills
      - Phonics and Word Recognition
        
        RF.3.3
        
        RF.3.3.A
        
        RF.3.3.B
        
        RF.3.3.C
        
        RF.3.3.D
      - Fluency
        
        RF.3.4
        
        RF.3.4.A
        
        RF.3.4.B
    - Writing
      - Text Types and Purposes
        
        W.3.2
        
        W.3.2.A
        
        W.3.2.C
        
        W.3.3
        
        W.3.3.C
    - Language
      - Conventions of Standard English
        
        L.3.1
        
        L.3.1.A
        
        L.3.1.B
        
        L.3.1.C
        
        L.3.1.D
        
        L.3.1.E
        
        L.3.1.F
        
        L.3.1.G
        
        L.3.1.H
        
        L.3.1.I
        
        L.3.2
        
        L.3.2.A
        
        L.3.2.B
        
        L.3.2.C
        
        L.3.2.D
        
        L.3.2.E
        
        L.3.2.F
      - Vocabulary Acquisition and Use
        
        L.3.4
        
        L.3.4.A
        
        L.3.4.B
        
        L.3.4.C
        
        L.3.5
        
        L.3.5.A
        
        L.3.5.B
    - Speaking & Listening
      - SL.3.1
        
        SL.3.1.A
        
        SL.3.1.B
        
        SL.3.1.C
      - SL.3.4
- Math
  - Kindergarten
    - Counting and Cardinality
      - K.CC.A
        
        K.CC.A.1
        
        K.CC.A.2
      - K.CC.B
        
        K.CC.B.4
        
        K.CC.B.5
      - K.CC.C
        
        K.CC.C.6
        
        K.CC.C.7
    - Operations and Algebraic Thinking
      - K.OA.A
        
        K.OA.A.1
        
        K.OA.A.2
        
        K.OA.A.4
        
        K.OA.A.5
    - Number and Operations in Base Ten
      - K.NBT.A
        
        K.NBT.A.1
    - Measurement and Data
      - K.MD.A
        
        K.MD.A.1
        
        K.MD.A.2
      - K.MD.B
        
        K.MD.B.3
    - Geometry
      - K.G.A
        
        K.G.A.1
        
        K.G.A.2
        
        K.G.A.3
      - K.G.B
        
        K.G.B.4
        
        K.G.B.5
        
        K.G.B.6
  - Grade 1
    - Operations and Algebraic Thinking
      - 1.OA.A
        
        1.OA.A.1
        
        1.OA.A.2
      - 1.OA.B
        
        1.OA.B.3
        
        1.OA.B.4
      - 1.OA.C
        
        1.OA.C.5
        
        1.OA.C.6
      - 1.OA.D
        
        1.OA.D.8
    - Number and Operations in Base Ten
      - 1.NBT.A
        
        1.NBT.A.1
      - 1.NBT.B
        
        1.NBT.B.2
        
        1.NBT.B.3
      - 1.NBT.C
        
        1.NBT.C.4
        
        1.NBT.C.5
        
        1.NBT.C.6
    - Measurement and Data
      - 1.MD.A
        
        1.MD.A.1
        
        1.MD.A.2
      - 1.MD.B
        
        1.MD.B.3
      - 1.MD.C
        
        1.MD.C.4
    - Geometry
      - 1.G.A
        
        1.G.A.1
        
        1.G.A.2
        
        1.G.A.3
  - Grade 2
    - Operations and Algebraic Thinking
      - 2.OA.A
        
        2.OA.A.1
      - 2.OA.B
        
        2.OA.B.2
      - 2.OA.C
        
        2.OA.C.3
        
        2.OA.C.4
    - Number and Operations in Base Ten
      - 2.NBT.A
        
        2.NBT.A.1
        
        2.NBT.A.2
        
        2.NBT.A.3
        
        2.NBT.A.4
      - 2.NBT.B
        
        2.NBT.B.5
        
        2.NBT.B.6
        
        2.NBT.B.7
    - Measurement and Data
      - 2.MD.A
        
        2.MD.A.1
        
        2.MD.A.2
        
        2.MD.A.3
        
        2.MD.A.4
      - 2.MD.B
        
        2.MD.B.5
      - 2.MD.C
        
        2.MD.C.7
        
        2.MD.C.8
      - 2.MD.D
        
        2.MD.D.9
        
        2.MD.D.10
    - Geometry
      - 2.G.A
        
        2.G.A.1
        
        2.G.A.2
        
        2.G.A.3
  - Grade 3
    - Operations and Algebraic Thinking
      - 3.OA.A
        
        3.OA.A.3
        
        3.OA.A.4
      - 3.OA.B
        
        3.OA.B.5
        
        3.OA.B.6
      - 3.OA.C
        
        3.OA.C.7
      - 3.OA.D
        
        3.OA.D.8
        
        3.OA.D.9
    - Number and Operations in Base Ten
      - 3.NBT.A
        
        3.NBT.A.1
        
        3.NBT.A.2
    - Measurement and Data
      - 3.MD.A
        
        3.MD.A.1
        
        3.MD.A.2
      - 3.MD.B
        
        3.MD.B.3
        
        3.MD.B.4
      - 3.MD.C
        
        3.MD.C.5
        
        3.MD.C.6
      - 3.MD.D
        
        3.MD.D.8
    - Geometry
      - 3.G.A
        
        3.G.A.1
        
        3.G.A.2
    - Number and Operations-Fractions
      - 3.NF.A
        
        3.NF.A.1
        
        3.NF.A.2
        
        3.NF.A.3
New York State Standards
- Math
  - Preschool
- English Language Arts
  - Preschool
- Social Studies
  - Kindergarten
    - Individual Development and Cultural Identity
      - K.1
        
        K.1a
        
        K.1b
      - K.2
        
        K.2a
        
        K.2b
        
        K.2c
      - K.3
        
        K.3b
    - Civics
      - K.4
        
        K.4a
        
        K.4b
      - K.5
        
        K.5a
        
        K.5b
    - Geography and Environment
      - K.6
        
        K.6a
        
        K.6b
        
        K.6c
    - Time, Continuity, and Change
      - K.8
        
        K.8a
  - Grade 1
    - Individual Development and Cultural Identity
      - 1.3
        
        1.3a
        
        1.3b
        
        1.3c
      - 1.4
        
        1.4a
        
        1.4b
        
        1.4c
      - 1.1
      - 1.2
    - Geography and Environment
      - 1.5
        
        1.5a
        
        1.5b
        
        1.5c
      - 1.6
        
        1.6a
    - Time, Continuity, and Change
      - 1.7
        
        1.7d
      - 1.8
        
        1.8a
    - Economic Systems
      - 1.9
        
        1.9a
        
        1.9b
        
        1.9c
      - 1.10
        
        1.10a
        
        1.10b
  - Grade 2
    - Individual Development and Cultural Identity
      - 2.2
        
        2.2b
      - 2.1
    - Civics
      - 2.4
        
        2.4a
        
        2.4b
        
        2.4c
      - 2.3
    - Geography and Environment
      - 2.5
        
        2.5b
        
        2.5d
    - Time, Continuity, and Change
      - 2.6
      - 2.7
    - Economic Systems
      - 2.8
        
        2.8a
        
        2.8b
        
        2.8c
      - 2.9
        
        2.9a
        
        2.9b
        
        2.9c
  - Grade 3
    - Civics
      - 3.7
      - 3.8
    - Geography and Environment
      - 3.1
        
        3.1a
        
        3.1b
      - 3.2
        
        3.2a
        
        3.2b
      - 3.3
        
        3.3a
        
        3.3b
    - Time, Continuity, and Change
      - 3.4
        
        3.4a
        
        3.4b
    - Economic Systems
      - 3.9
        
        3.9a
      - 3.10
        
        3.10a
    - Cultures
      - 3.5
        
        3.5b
Next Generation Science Standards
- Science

3-9
Addition and Subtraction - less than 20

Place Value Adding with Base 10 blocks (no regrouping)

Place Value Adding with Base 10 blocks (no regrouping)

Relate Place Value (base 10 block) addition to standard algorithm addition

Relate Place Value (base 10 block) addition to standard algorithm addition

Basic Facts Doubles & Turn Around Facts

Basic Facts Doubles & Turn Around Facts

Base 10 and standard Subtraction (no regrouping)

Base 10 and standard Subtraction (no regrouping)

Mental Math -Subtract and Add by 10 - Part 2

Mental Math -Subtract and Add by 10 - Part 2

Properties of Addition - Part 1

Properties of Addition - Part 1

Properties of Addition - Part 2

Properties of Addition - Part 2