Teacher Resources Considerations: This lesson represents a skill necessary for mastery of 1.OA.1. Missing addends can be represented by any letter or symbol.
Missing addend in the second position:
4+☐=9
☐= 5 Sum unknown:
7+3=W
Drawing boxes are not provided in this lesson. Students can make their own drawings if that scaffold is still needed.
Steps: 1. Identify the unknown. 2. Solve for the unknown. 3. Record the unknown.
Application of MPs: MP1:
What strategy helped you in today's lesson?
MP2: What is a real life scenario you could apply? MP5: What strategy could you use to make the calculation easier?
*MP6: How do you know your answers are correct/reasonable?
Recap today’s lesson with one or more of the following MP questions: MP1: What strategy helped you in today’s lesson? MP2: What is a real life scenario you could apply? MP5: What strategy could you use to make the calculation easier?