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?