In this Investigation students use the games to connect counting with subtraction.
They are subtracting within 10 to promote fluency with -1/-2.
Students also encounter story problems in which they make sense, retell, and understand that the result is less than what they started with.
Sessions 1.3.6 and 1.3.7 can be combined.

📊 Unit 1 Investigation 3 Session 1 (1.3.1) One or Two Less and Counting Backwards
📊 Unit 1 Investigation 3 Session 2 (1.3.2) Subtraction Story Problems: Solving and Recording Solutions
📊 Unit 1 Investigation 3 Session 3 (1.3.3) Introducing Subtractions Games
📊 Unit 1 Investigation 3 Session 4 (1.3.4) Subtraction Story Problems: Sharing and Comparing Strategies
📊 Unit 1 Investigation 3 Session 5 (1.3.5) Story Problems and Subtraction Games
📊 ✅ Unit 1 Investigation 3 Session 6 (1.3.6) Subtractions Strategies and Notation
- Please add Nearpod Lesson Unit 1 Quiz 1.3.6 (Links to an external site.) from District Library Math Grade 1 to your lesson library as an external tool.
📊 ✅ Unit 1 Investigation 3 Session 7 (1.3.7) Solving Story Problems
- Please add Nearpod Lesson Unit 1 Quiz 1.3.7 (Links to an external site.) from District Library Math Grade 1 to your lesson library as an external tool.