Unit 4, Lesson 22
Center Day 4
Grade 1
Preparation
Lesson Narrative
In the first activity, students learn a new center called Mystery Number. In this center, students give clues to help their partner guess a two-digit number. In the second activity, students choose between center activities introduced earlier in the unit.
- Describe (orally) and identify two-digit numbers using clues based on place value.
- Let’s play games about tens and ones.
Required Materials
Activity 2
Required Preparation
- Gather materials from previous centers:
- Mystery Number, Stage 1
- Get Your Numbers in Order, Stage 1
- Greatest of Them All, Stage 1
Suggested Centers
NoneTeacher Reflection Questions
As you finish up this unit, reflect on the norms and activities that have supported each student in learning math. List ways you have seen each student grow as a young mathematician throughout this work. List ways you have seen yourself grow as a teacher. What will you continue to do and what will you improve upon in the next unit?