# Lesson 11

Compare and Sort Solid Shapes

### Lesson Purpose

The purpose of this lesson is for students to compare solid shapes.

### Lesson Narrative

In previous lessons, students identified, described, and built solid shapes. In this lesson, students describe and compare the attributes of solid shapes. When describing and comparing shapes, students are not required to know or use language such as “faces”, “edges”, or “vertices”. Students may use their own language to describe these attributes, such as “sides,” “points,” or “corners.” If it is unclear what part of a shape a student is referring to, consider asking them to point to which part of the shape they are describing.
• Representation
• MLR8

Activity 1: Compare Solid Shapes

### Learning Goals

Teacher Facing

• Use their own language to describe and compare solid shapes.

### Student Facing

• Let’s figure out how solid shapes are alike and different.

### Required Materials

Materials to Gather

### Required Preparation

Warm-up:

• Gather a cylinder to display.

Activity 1:

• Each group of 2 students needs at least 6-8 solid shapes.
• Gather a cone, a cube, and two different cylinders to display in the activity synthesis.

Activity 2:

• Each group of 2 students needs at least 6-8 solid shapes from the previous activity.

Activity 3:

• Place 4-6 different solid shapes into a bag that is not see-through for each group of 2 students.
• Gather materials from:
• Counting Collections, Stage 1
• Match Mine, Stage 1
• Shake and Spill, Stages 1-4

### Lesson Timeline

 Warm-up 10 min Activity 1 10 min Activity 2 15 min Activity 3 15 min Lesson Synthesis 10 min Cool-down 0 min

### Teacher Reflection Questions

In grade 1, students distinguish between defining and non-defining attributes of shapes. How does the work of this lesson prepare students for the work of grade 1?

### Print Formatted Materials

 Student Task Statements pdf docx Lesson Cover Page pdf docx Teacher Guide Log In Teacher Presentation Materials pdf docx