Unit 7, Lesson 10
Resolvamos problemas sobre perímetros y áreas
Grado 3
Preparation
Lesson Narrative
In previous lessons, students learned what area is and how to find the area of rectangles and figures made up of rectangles. They also learned how to measure the perimeter of other shapes, solve problems that involved perimeter, and recognize situations in which perimeter is and is not relevant. By the end of this lesson, students confirm that while perimeter and area are both measurements that can appear together in problems, perimeter is a linear measurement while area is two-dimensional.
- Representation
- MLR1
- Determine the information needed to solve two-step word problems involving the area and perimeter of rectangles. Ask (orally) questions to elicit that information.
- Solve problems that involve perimeter and area of rectangles.
- Resolvamos problemas sobre perímetros y áreas.
Required Preparation
- Each group of 2 will need a copy of the 2 data and problem card sets. Keep set 1 separate from set 2.
Teacher Reflection Questions
What was the best question you asked students today? Why would you consider it the best one based on what students said or did?