Lesson 14
Center Day 3 (optional)
Warm-up: Number Talk: Adding Up to 4 Two-digit Numbers (10 minutes)
Narrative
Launch
- Display one expression.
- “Give me a signal when you have an answer and can explain how you got it.”
- 1 minute: quiet think time
Activity
- Record answers and strategies.
- Keep expressions and work displayed.
- Repeat with each expression.
Student Facing
Find the value of each expression mentally.
- \(10 + 15 + 20 + 10\)
- \(5 + 30 + 20\)
- \(15 + 20 + 30 \)
- \(25 + 15 + 5 + 15\)
Student Response
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Activity Synthesis
- “How can you tell which sums will have 0 ones and which sums will have 5 ones?”
Activity 1: Introduce Picture Books, Find Shapes (15 minutes)
Narrative
The purpose of this activity is for students to learn stage 3 of the Picture Books center. Students look through picture books and notice and describe shapes they see in the pictures.
Required Materials
Required Preparation
Each group of 2–4 needs at least one picture book that shows a variety of shapes throughout the book.
Launch
- Groups of 2
- Give each student a recording sheet and each group 2–4 picture books.
- “We are going to learn a new way to do the Picture Books center.”
- “Your group will look through picture books and notice and describe shapes you see in the pictures. On your recording sheet, you will each sketch the shape you see, describe it, and name it.”
Activity
- 10 minutes: partner work time
- Monitor for different shapes students notice.
Activity Synthesis
- “What shapes did you find most often?”
Activity 2: Centers: Choice Time (25 minutes)
Narrative
The purpose of this activity is for students to choose from activities that focus on adding and subtracting within 100. Students may also choose to continue working on Picture Books as one of their choices.
Students choose from any stage of previously introduced centers.
- Capture Squares
- Number Puzzles
- Picture Books
Required Materials
Materials to Gather
Required Preparation
Gather materials from:
- Capture Squares, Stages 3–4
- Number Puzzles, Stages 2–4
- Picture Books, Stage 3
Launch
- “Now you will choose from centers we have already learned. One of the choices is to continue with Picture Books.”
- Display the center choices in the student book.
- “Think about what you would like to do first.”
- 30 seconds: quiet think time
Activity
- Invite students to work at the center of their choice.
- 10 minutes: center work time
- “Choose what you would like to do next.”
- 10 minutes: center work time
Student Facing
Choose a center.
Capture Squares
Number Puzzles
Picture Books
Activity Synthesis
-
“What did you like about the activities you worked on today?”