First Grade Math Resources

In Grade 1, instructional time should focus on four critical areas: (1) developing understanding of addition, subtraction, and strategies for addition and subtraction within 20; (2) developing understanding of whole number relationships and place value, including grouping in tens and ones; (3) developing understanding of linear measurement and measuring lengths as iterating length units; and (4) reasoning about attributes of, and composing and decomposing geometric shapes.


Operations and Algebraic Thinking
  • Represent and solve problems involving addition and subtraction.
  • Understand and apply properties of operations and the relationship between addition and subtraction.
  • Add and subtract within 20.
  • Work with addition and subtraction equations.

Number and Operations in Base Ten
  • Extend the counting sequence.
  • Understand place value.
  • Use place value understanding and properties of operations to add and subtract

Measurement and Data
  • Measure lengths indirectly and by iterating length units.
  • Tell and write time.
  • Represent and interpret data.

Geometry
  • Reason with shapes and their attributes.

Mathematical Practices
  • Make sense of problems and persevere in solving them.
  • Reason abstractly and quantitatively.
  • Construct viable arguments and critique the reasoning of others.
  • Model with mathematics.
  • Use appropriate tools strategically.
  • Attend to precision.
  • Look for and make use of structure.
  • Look for and express regularity in repeated reasoning.