Lesson 13

Dominós hasta 5

Lesson Purpose

The purpose of this lesson is for students to develop fluency with adding and subtracting within 5 as they identify compositions and decompositions of numbers to 5.

Lesson Narrative

In a previous lesson, students created their own dot images and identified different compositions and decompositions of numbers to 5. In this lesson, students work with dominoes. Students sort dominoes by total, which encourages them to recognize different compositions and decompositions of numbers to 5 and think about both the parts and the total at the same time. Students also compare the number of dots on the dominoes.

If students need additional support with the concepts in this lesson, refer back to Unit 5, Section B in the curriculum materials.

• Representation
• MLR8

Activity 2: Comparemos puntos en dominós

Learning Goals

Teacher Facing

• Recognize compositions and decompositions of numbers to 5.

Student Facing

• Clasifiquemos distintas maneras de formar números hasta 5.

Required Materials

Materials to Gather

Materials to Copy

• Domino Cards
• Sorting Chart 1-5

Required Preparation

Activity 1:

• Create a set of domino cards from the blackline master for each group of 2. If actual dominoes are available, give students the dominoes which show a total of 5 or less.

Activity 2:

• Each group of 2 needs the domino cards from the previous activity.

Activity 3:

• Gather materials from:
• 5-frames
• Bingo
• Geoblocks
• Find the Value of Expressions

Lesson Timeline

 Warm-up 10 min Activity 1 10 min Activity 2 15 min Activity 3 20 min Lesson Synthesis 5 min Cool-down 0 min

Teacher Reflection Questions

Students are expected to fluently add and subtract within 5 by the end of kindergarten. How does the work students do in this lesson prepare them to fluently add and subtract within 5?