1. Section 1

1.10. Connect

Mathematics 20-3 Module 5

Section 1: Viewing and Representing 3-D Objects

 

Connect

 

Going Beyond

 

In this lesson you represented three-dimensional objects in two dimensions. Isometric views are often the easiest to visualize.

 

Example

 

How many cubes make up the object shown in the top screen in 3D Applet Example? Check your answer.

This play button opens 3D Applet Example.

 

Solution

 

Counting the cubes in columns from left to right, there are 4 + 3 (partially hidden) + 3 + 2 + 3 (front row) + 3 (right-hand row) = 18.


There are 18 cubes in the figure.



Share 2

 

Work with a partner. Use the bottom screen in 3D Applet Example to create a block object. Then challenge your partner to count the number of cubes in the object.

This play button opens 3D Applet Example (Single Window).

 
Project Connection

 

The Module 5 Project: Produce a Set of Drawings and a Scale Model involves representing and creating a three-dimensional object.

 


textbook
  • Turn to page 209 of the textbook and read “Project Overview” and “Final Presentation Checklist” to get an understanding of the Module 5 Project.

  • Complete the “Get Started” portion of the project on page 209.

  • Contact your teacher to make sure the object you have chosen is appropriate.

course folder You will be presenting this entire Module 5 Project at the end of the module. Make sure you save your work in your course folder.

Lesson 1 Assignment

 


assignment

Your lesson assignment contains some problems for you to solve using the knowledge gained during the lesson. Now you will have the chance to apply the concepts and strategies learned to a new situation. Show work to support your answers.

 

You will need two sheets of graph paper and one sheet of isometric dot paper, or use the interactive geoboard and take screen shots of your responses.

Open the Lesson 1 Assignment that you saved to your course folder and complete the questions.