Unit 4, Lesson 5
Center Day 1
Grade 1
Preparation
Lesson Narrative
In Activity 1, students learn Stage 3 of the Check It Off center. In this new stage, called Add or Subtract Tens, students pick two number cards that are multiples of 10 (0–90) and choose whether to make an addition or subtraction expression. In Activity 2, students choose from previously introduced centers that also focus on adding and subtracting.
- Action and Expression
- MLR8
- Explain (orally) strategies for adding and subtracting multiples of 10.
- Let’s add and subtract.
Required Materials
Activity 2
Required Preparation
- Create a set of cards from the blackline master for each group of 2.
- Gather materials from previous centers:
- Five in a Row, Stages 1–4
- How Close, Stages 1 and 2
- Number Puzzles, Stages 1 and 2
Suggested Centers
NoneTeacher Reflection Questions
What do your students think it means to be good at math? How are you helping them change negative impressions they might have about their ability to reason mathematically?