Open Up Resources K–5 MathGrade 1

• Unit 1: Adding, Subtracting, and Working With Data

• Unit 2: Addition and Subtraction Story Problems

• Unit 3: Adding and Subtracting Within 20

• Unit 4: Numbers to 99

• Unit 5: Adding Within 100

• Unit 6: Length Measurements Within 120 Units

• Unit 7: Geometry and Time

• Unit 8: Putting It All Together