Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup
Learning Math Home
Number and Operations: Notes
Session 2 Part A Part B Part C Homework
Algebra Site Map
Session 2 Materials:

A B C 


Notes for Session 2, Part B

Note 3

It is difficult for us to think about infinity because our minds are finite, and we can't easily see or touch anything that is infinite. Here is one way to try to imagine it. First, think about the counting numbers. We know that there is no largest counting number -- that you can always add 1 to a counting number and get a larger one. This means that there is an infinite number of counting numbers. In this section, we will compare other infinite sets to the set of counting numbers.

<< back to Part B: The Size of Infinity


Learning Math Home | Number Home | Glossary | Map | ©

Session 2 | Notes | Solutions | Video


© Annenberg Foundation 2017. All rights reserved. Legal Policy