Unit 1, Lesson 3
Dibujos del volumen de un prisma
Grado 5
Preparation
Lesson Narrative
In previous lessons, students built objects, including rectangular prisms, with unit cubes and counted the number of cubes in each object. In this lesson, students continue to count the number of unit cubes needed to build a rectangular prism, but now they are presented with images of prisms instead of the objects themselves. To encourage students to develop a systematic way to count the cubes, they are shown prisms made from greater numbers of cubes. As students use horizontal or vertical layers to measure the volume, they make use of the layered structure of prisms (MP7).
Math Community
Tell students that, at the end of the lesson, they will be asked to identify specific actions from their “Doing Math” list (both teacher and student sections) that they personally experienced.
- Representation
- MLR8
- Explain (orally and in writing) strategies for calculating the volume of a rectangular prism composed of unit cubes.
- Usemos capas para encontrar el volumen.
Required Preparation
- Create a set of cards from the blackline master for each group of 2 students.
- Each group needs 48 connecting cubes.
- Give students access to connecting cubes.
Teacher Reflection Questions
What connections did students make between the different strategies that they used to build the prisms and determine the volume? What questions did you ask to help make the connections more visible?