Lesson 17
Cachorros y tulipanes (optional)
Lesson Purpose
Lesson Narrative
This lesson is optional because it does not address any new mathematical content standards. This lesson does provide students with an opportunity to apply precursor skills of mathematical modeling. In this lesson, students make origami tulips and puppies and use problem sentence frames to tell puppy and tulip stories using “fewer” and “more”. Students solve Compare, Difference Unknown story problems with language that suggests the opposite operation. For example, problems that use a comparison statement with “more,” but require subtraction to solve. Students will work more with these problem types in grade 2.
When students make choices, adhere to constraints, and analyze real-world situations with mathematical ideas they model with mathematics (MP4).
- Action and Expression
- MLR8
Learning Goals
Teacher Facing
- Analyze and solve Compare story problems with unknowns in all positions.
- Write equations to represent story problems.
Student Facing
- Hagamos origami y, luego, contemos y resolvamos problemas-historia usando las palabras “más” y “menos”.
Required Materials
Materials to Gather
- Colored pencils, crayons, or markers
- Connecting cubes
- Construction paper
- Glue
- Materials from a previous activity
Materials to Copy
- Origami Triangles: Puppies and Tulips
Required Preparation
Activity 1:
- Each group of 2 needs at least 20 paper triangles.
Activity 2:
- Each group needs their origami stories from the previous activity.
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 25 min |
| Activity 2 | 15 min |
| Lesson Synthesis | 10 min |