Mathematics
1st Grade
What Do Students Learn in 1st Grade Math?
In 1st Grade Math, 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.
Units
Unit 1
13 Lessons
Adding and Subtracting Within 10
Students build fluency with addition and subtraction within 10 using various strategies. Students solve familiar story problem types within 10 using objects, pictures, and equations to represent the mathematics in the problem.
Unit 2
22 Lessons
Adding and Subtracting With Story Problems
Students solve new story problem types within 10 using objects, pictures, and equations to represent the mathematics in the problem. They explore the relationship between addition and subtraction and develop flexibility relating equations to story problems.
Unit 3
12 Lessons
Measurement
Students develop the foundational skills of measuring length by comparing and ordering objects by length and by iterating length units. They solve story problems about measurement.
Unit 4
23 Lessons
Adding and Subtracting Within 20
Students extend their addition and subtraction strategies to numbers within 20 while building fluency within 10. They are introduced to start unknown problems and revisit familiar problem types, deepening their understanding of the relationship between addition and subtraction and applying flexibility in representing story problems with equations.
Unit 5
11 Lessons
Data Investigations
Students build on their understanding of classification by organizing, representing, and interpreting data in up to three categories. They ask and answer questions about the data and solve related problems using addition and subtraction. The unit also introduces new compare problem types and emphasizes using tools and visual models to make sense of data.
Unit 6
Place Value to 99
This unit will include approximately 27 lessons. Units 4 through 8 will be released on a rolling basis starting in Fall 2025.
Unit 7
Adding with Place Value Within 100
This unit will include approximately 20 lessons. Units 4 through 8 will be released on a rolling basis starting in Fall 2025.
Unit 8
Shapes and Their Attributes
This unit will include approximately 15 lessons. Units 4 through 8 will be released on a rolling basis starting in Fall 2025.
