Lesson 6
El problema de los casilleros
Lesson Purpose
Lesson Narrative
In previous lessons, students used multiples to solve problems about equal-size groups (tables that accommodate certain numbers of seats and packages that contain certain numbers of items). In this lesson, students apply their knowledge of factors, multiples, prime numbers, and composite numbers to solve problems about a game involving opening and closing of lockers. Students look for patterns in the factors or multiples of numbers and use them to make predictions about the lockers that will have been touched after all 20 players of the game have a turn.
Math Community
Tell students they will reflect on the norms they identified at the end of this lesson.
- Representation
- MLR7
Activity 1: Casilleros dudosos
Learning Goals
Teacher Facing
- Apply understanding of factors, multiples, and prime and composite numbers to solve problems.
Student Facing
- Descifremos lo que está sucediendo en un juego sobre casilleros.
Required Materials
Materials to Gather
Required Preparation
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 10 min |
| Activity 2 | 25 min |
| Lesson Synthesis | 10 min |
| Cool-down | 5 min |
Teacher Reflection Questions
Suggested Centers
- Find the Number (4), Stage 2: Factors and Multiples (Addressing)
- Five in a Row: Multiplication (3–5), Stage 2: Factors 1–9 (Addressing)
- Secret Fraction (3), Stage 1: Building Non-Unit Fractions (Supporting)