2nd Grade Math (Oklahoma Academic Standards)

Number & Operations (N)

• Compare and represent whole numbers to 1,000 with a focus on place value and equality.
  • 2.N.1.1 Read, write, talk about, and show whole numbers to 1,000 in different ways.
  • 2.N.1.2 Place whole numbers up to 100 on an open number line using number relationships.
  • 2.N.1.3 Describe numbers as hundreds, tens, and ones in word, standard, and expanded form.
  • 2.N.1.4 Find 10 more, 10 less, 100 more, and 100 less than a three-digit number.
  • 2.N.1.5 Use objects to tell whether a number is even or odd.
  • 2.N.1.6 Round numbers to 1,000 to the nearest ten or hundred and know when rounding helps.
  • 2.N.1.7 Compare and order whole numbers to 1,000 with words, numbers, and symbols.
• Add and subtract one- and two-digit numbers in real-world and math problems.
  • 2.N.2.1 Use the inverse link between addition and subtraction to learn basic facts to 20.
  • 2.N.2.2 Add and subtract fluently with sums and minuends to 20.
  • 2.N.2.3 Estimate sums and differences up to 100.
  • 2.N.2.4 Add and subtract two-digit numbers with place-value strategies and algorithms.
  • 2.N.2.5 Solve addition and subtraction problems with whole numbers up to two digits.
  • 2.N.2.6 Use repeated addition, arrays, and ten frames to begin understanding multiplication.
• Explore early ideas about fractions.
  • 2.N.3.1 Identify sets and areas split into halves, thirds, and fourths.
  • 2.N.3.2 Make equal shares by fair sharing with length, set, and area models.
• Find the value of a set of coins.
  • 2.N.4.1 Find the value of a group of coins up to one dollar and write it with the cent sign.
  • 2.N.4.2 Show an amount up to one dollar with different coin combinations.

Algebraic Reasoning & Algebra (A)

• Describe relationships in patterns to solve problems.
  • 2.A.1.1 Show, make, describe, complete, and extend growing and shrinking number patterns.
  • 2.A.1.2 Show and describe repeating patterns of shapes in different contexts.
• Use number sentences with unknowns to model and solve problems.
  • 2.A.2.1 Show number sentences with objects and number lines.
  • 2.A.2.2 Make models and situations to match number sentences, and write sentences for models.
  • 2.A.2.3 Use the commutative and identity properties and number sense to find unknowns in addition and subtraction.

Geometry & Measurement (GM)

• Analyze attributes of flat and solid figures and generalize about them.
  • 2.GM.1.1 Recognize regular and irregular trapezoids and hexagons.
  • 2.GM.1.2 Describe, compare, and classify flat figures by their geometric attributes.
  • 2.GM.1.3 Compose and take apart shapes using triangles, squares, hexagons, trapezoids, and rhombi.
  • 2.GM.1.4 Sort solid shapes by their numbers of faces, vertices, and edges.
  • 2.GM.1.5 Recognize right angles and tell whether other angles are smaller or larger.
• Understand length as something that can be measured and explore capacity.
  • 2.GM.2.1 Explain how the size of the unit changes how many units measure a length.
  • 2.GM.2.2 Link length to the numbers on a ruler and measure to the nearest whole unit.
  • 2.GM.2.3 Explore how containers of different shapes can hold the same amount.
• Tell time to the quarter hour.
  • 2.GM.3.1 Tell the difference between a.m. and p.m.
  • 2.GM.3.2 Read and write times to the quarter hour on analog and digital clocks.

Data & Probability (D)

• Collect, organize, and make sense of data.
  • 2.D.1.1 Explain that bar length or the number of pictures in a graph shows how many data points.
  • 2.D.1.2 Organize data in up to four categories with picture graphs and bar graphs.
  • 2.D.1.3 Write and solve one-step addition or subtraction problems from graphs with intervals of one.
  • 2.D.1.4 Draw conclusions and make predictions from picture graphs and bar graphs.