Lesson 14
Practiquemos un algoritmo en el que se usan cocientes parciales
Lesson Purpose
Lesson Narrative
In previous lessons, students learned to use an algorithm using partial quotients to evaluate division expressions involving two-digit divisors. In this lesson, students extend their work in two ways. First, using partial quotients requires care in finding multiples and subtracting those multiples or partial quotients. Students identify and correct errors in multiplication and subtraction. Then they find quotients of larger numbers. Here the multiplication and subtraction demands increase and students see the first cases where they can subtract 100 or a multiple of 100 of the divisor from the dividend.
- Action and Expression
- MLR8
Learning Goals
Teacher Facing
- Divide four-digit dividends by two-digit divisors using an algorithm using partial quotients.
Student Facing
- Practiquemos cómo usar un algoritmo de cocientes parciales.
Required Preparation
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
It is important for students to build procedural skills from conceptual understanding. How will you connect student thinking to support each student in using increasingly more efficient multiples of the divisor when they use an algorithm using partial quotients?
Suggested Centers
- Number Puzzles: Multiplication and Division (4–5), Stage 2: Multi-digit Factors (Addressing)