About This Lesson
Students choose a number and write 4 number sentences to make that number. Aligned with Common Core Standard: K.OA.2-4 Operations and Algebraic Thinking: Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. Aligned with Common Core Standard: 1.OA.3 Operations and Algebraic Thinking: Understand and apply properties of operations and the relationship between addition and subtraction.