Lesson 7
Hagamos medios, tercios y cuartos
Lesson Purpose
The purpose of this lesson is for students to recognize halves, thirds, and fourths, understanding that these terms describe equal pieces of the same whole.
Lesson Narrative
In grade 1, students learned that when a shape is partitioned into 2 equal pieces, the pieces are called halves. They learned that when a shape is partitioned into 4 equal pieces, each piece is called a fourth or a quarter.
In this lesson, students learn that when a shape is partitioned into 3 equal pieces, the pieces are called thirds. They partition shapes into halves, thirds, and fourths. Fourths and quarters should be used interchangeably when discussing 4 equal pieces, so that students are comfortable with both terms.
- Engagement
- MLR8
Activity 2: No es eso
Learning Goals
Teacher Facing
- Partition circles and rectangles into halves, thirds, and fourths, and describe the pieces.
Student Facing
- Hagamos medios, tercios y cuartos o cuartas partes.
Required Materials
Materials to Gather
Required Preparation
Activity 1:
- Each student needs 3 identical paper rectangles.
- Students could use 3 sheets of construction paper as their 3 rectangles. To save paper, construction paper could also be pre-cut into equal-size rectangles.
CCSS Standards
Addressing
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 20 min |
| Activity 2 | 15 min |
| Lesson Synthesis | 10 min |
| Cool-down | 5 min |
Teacher Reflection Questions
In grade 2, students used halves, fourths, and quarters to describe equal pieces of a shape. How did you see students use this vocabulary in today’s lesson? What support can you offer to students to help them use math vocabulary to describe equal pieces of a shape.
Suggested Centers
- How Are They the Same? (1–5), Stage 2: Grade 2 Shapes (Addressing)
- Which One? (K–5), Stage 3: Grade 2 Shapes (Addressing)