Lesson 9
Partes iguales
Lesson Purpose
Lesson Narrative
In previous lessons, students created two- and three-dimensional shapes from smaller shapes.
Students begin this lesson by composing shapes and compare those made with equal pieces to those made with unequal pieces. Then, they partition shapes into two and four equal size pieces and learn the terms halves and fourths. Students do not have to create exactly equal pieces, but they should be able to explain that the pieces should be equal.
- Action and Expression
- MLR8
Learning Goals
Teacher Facing
- Determine whether shapes are partitioned into equal pieces.
- Partition circles and rectangles into halves and fourths.
Student Facing
- Partamos figuras en partes de igual tamaño.
Required Materials
Required Preparation
Activity 1:
- Cut out the pieces of the circles on the blackline master. Each copy has enough pieces for 8 students.
Activity 2:
- Consider having extra shapes cut from the blackline masters for students who may need more than one of each shape.
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 10 min |
| Activity 2 | 15 min |
| Activity 3 | 10 min |
| Lesson Synthesis | 10 min |
| Cool-down | 5 min |
Teacher Reflection Questions
How does this work build the foundation for understanding fractions in later grades? How is this introductory work different from the work student will do beginning in Grade 3?
Print Formatted Materials
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| Student Task Statements | docx | |
| Lesson Cover Page | docx | |
| Cool Down | Log In | |
| Teacher Guide | Log In | |
| Teacher Presentation Materials | docx | |
| Blackline Masters | zip |