1st Grade Math Help - Learn by Concept

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Concepts

• 1st Grade Math

  • Charts

  • Fractions

  • Geometry

  • Number Sense

  • Operations

  • Time

• Common Core Math: Grade 1

  • Geometry

    • Reason with Shapes and their Attributes

      • Composing Three-Dimensional Shapes

      • Composing Two-Dimensional Shapes

      • Defining Versus Non-Defining Attributes: CCSS.MATH.CONTENT.1.G.A.1

      • Use Rectangles and Circles to Show Halves and Fourths: CCSS.MATH.CONTENT.1.G.A.3

  • Measurement & Data

    • Measure Lengths Indirectly and by Iterating Length Units

      • Order and Compare Objects by Length: CCSS.MATH.CONTENT.1.MD.A.1

    • Representing and Interpreting Data

      • Organize, Represent, and Interpret Data: CCSS.MATH.CONTENT.1.MD.C.4

    • Telling and Writing Time

      • Tell and Write Time to the Hour and Half-Hour: CCSS.MATH.CONTENT.1.MD.B.3

  • Number & Operations in Base Ten

    • Extend the Counting Sequence

      • Count, Read, and Write Numbers 1-120: CCSS.MATH.CONTENT.1.NBT.A.1

    • Place Value and Properties of Operations to Add and Subtract

      • Add a Two-Digit Number to a One-Digit Number, and Two-Digit Number and a Multiple of 10: CCSS.MATH.CONTENT.1.NBT.C.4

      • Add and Subtract 10 to Two-Digit Numbers: CCSS.MATH.CONTENT.1.NBT.C.5

      • Subtract Multiples of 10 From Multiples of 10: CCSS.MATH.CONTENT.1.NBT.C.6

    • Understanding Place Value

      • 11 to 19 are Composed of a Ten and One, Two, Three, Four, Five, Six, Seven, Eight, or Nine Ones: CCSS.MATH.CONTENT.1.NBT.B.2.B

      • Compare Two-Digit Numbers: CCSS.MATH.CONTENT.1.NBT.B.3

      • Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer to One, Two, Three, Four, Five, Six, Seven, Eight, or Nine Tens: CCSS.MATH.CONTENT.1.NBT.B.2.C

      • Understand That a Two-Digit Number Represents Tens and Ones: CCSS.MATH.CONTENT.1.NBT.B.2:

  • Operations & Algebraic Thinking

    • Adding and Subtracting Within 20

      • Adding and Subtracting Within 20: CCSS.MATH.CONTENT.1.OA.C.6

      • Addition within 20 to Solve Word Problems

      • Knowing How and When to Subtract

      • Relate Counting to Addition and Subtraction: CCSS.MATH.CONTENT.1.OA.C.5

      • Subtraction within 20 to Solve Word Problems

      • Understanding the Associative Property

      • Understanding the Commutative Property

    • Representing and Solving Addition and Subtraction Problems

      • Addition and Subtraction Within 20 to Solve Word Problems: CCSS.MATH.CONTENT.1.OA.A.1

      • Word Problems: Addition of Three Whole Numbers Whose Sum is 20 or Less: CCSS.MATH.CONTENT.1.OA.A.2

    • Subtracting within 20

    • Understanding and Applying Properties of Operations and the Relationship between Addition and Subtraction

      • Use Properties of Operations to Add and Subtract: CCSS.MATH.CONTENT.1.OA.B.3

      • Use the Unknown-Addend to Subtract: CCSS.MATH.CONTENT.1.OA.B.4

    • Working with Addition and Subtraction Equations

      • Find the Missing Number in Addition and Subtraction Equations: CCSS.MATH.CONTENT.1.OA.D.8

      • Understand the Equal Sign, Determine if Equations are True or False: CCSS.MATH.CONTENT.1.OA.D.7