Unit 4
Center Day 2
Lesson 13
Numbers to 99
Expressions and Equations
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Let’s add and subtract and work with tens and ones.
Unit 4 ● Lesson 13
Learning
Goal
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Within 20
Unit 4 ● Lesson 13 ● Warm-up
Find the value of each expression mentally.
Number Talk
Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.
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Centers: Choice Time
Unit 4 ● Lesson 13 ● Activity 1
Choose a center.
Grab and Count Five in a Row
Check It Off
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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.
Centers: Choice Time
Unit 4 ● Lesson 13 ● Activity 1
Han is playing Check It Off. He picks the numbers 70 and 20. What numbers could he check off?
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Activity Synthesis
Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.
Centers: Choice Time
Unit 4 ● Lesson 13 ● Activity 2
Choose a center.
How Close? Number Puzzles
Shake and Spill
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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.
Centers: Choice Time
Unit 4 ● Lesson 13 ● Activity 2
8, 4, 1, 7, 5
Priya is playing How Close. Which three numbers should she choose to get close to 20?
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Activity Synthesis
Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.
Center Day 2
Unit 4 ● Lesson 13
How did you and your partner work together during centers? What went well? What can we continue to work on?
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Lesson Synthesis
Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.
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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.