Lesson 2

Discover

 

Sets of numbers can be described in a variety of ways: with words, with mathematical symbols, or pictorially. As with any set of items, numbers may be organized and sorted into sets using some characteristics of them.

 

You will be observing how these sets are similar and how a number may or may not belong to one or more sets. Remember, you are looking at the characteristics of numbers in relation to other numbers. Some examples of characteristics you will experience are prime numbers, even numbers, and multiples.

 

Try This 1

1. Describe each of the sets of numbers with words and with mathematical symbols.
   1. 1, 3, 5, 7, …
   2. 3, 6, 9, 12, …
   3. …, –9, –6, –3, 0, 3, 6, 9, …

2. What does the “…” shown in the three sets for question 1 represent?

Save your responses in your course folder.

 

Share 1

 

Share your responses from Try This 1 with a partner or in a group.

1. How do your descriptions of the sequences compare with others?
2. What words or symbols did you have in common?

If required, save a record of your discussion in your course folder.