Lesson: Set of Natural Numbers Mathematics • 9th Grade

In this lesson, we will learn how to check if a number, or a set of numbers, belongs to, is included in, or is not included in the set of natural numbers.

Lesson Plan

Students will be able to

define the set of natural numbers as the set of counting numbers together with 0,
determine whether a number is a natural number or not,
decide whether a set is a subset of natural numbers or not,
define common subsets of natural numbers, such as even numbers, odd numbers, and prime numbers.

Lesson Playlist

00:41
01:06
01:15

Lesson Worksheet

Q1:

The set of natural numbers is .

Q2:

Decide whether the answer to the following question belongs to : How many cities are there in your country?

Q3:

Decide whether the answer to the following question belongs to : How many pages are there in a book?