Lesson 7

Números con decenas y unidades

Lesson Purpose

The purpose of this lesson is for students to understand that two-digit numbers are composed of tens and ones.

Lesson Narrative

In the previous lesson, students considered different ways to organize, count, and represent a collection of 52 objects.

In this lesson, students generalize the base-ten structure to all two-digit numbers. They read these numbers and consider how they are made up of tens and ones. At this time, students do not need to write two-digit numbers because they will do so in a later lesson.

  • Action and Expression
  • MLR8

Learning Goals

Teacher Facing

  • Read two-digit numbers.
  • Understand any two-digit number as composed of tens and ones.

Student Facing

  • Aprendamos más sobre decenas y unidades.

Required Materials

Materials to Gather

Materials to Copy

  • Make It, Two-Digit Numbers Recording Sheet Number, Drawing, Words, Spanish

Required Preparation

  • Create a poster with the number 6 in the tens place and a sticky note to the right of the 6 for the Lesson Synthesis.

Activity 3:

  • Gather materials from previous centers:
    • Shake and Spill, Stages 3–5
    • How Close, Stages 1 and 2
    • Check It Off, Stages 1–3

Lesson Timeline

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

Teacher Reflection Questions

What opportunities are you giving students to reflect on their understanding of the mathematical content?

Print Formatted Materials

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Student Task Statements pdf docx
Lesson Cover Page pdf docx
Teacher Guide Log In
Teacher Presentation Materials pdf docx
Blackline Masters zip