Week 3 – Lesson 1

Grade: 5
Date: September 28, 2020
Subject: Mathematics
Topic: Equal and Equivalent Sets
 
 
Focus Question: In what ways can sets be represented?
 
Equal Sets
Two sets are equal if the members in one set are
identical to the members in the other set.
The number of members in both sets must also be equal.
 
Example:
M = {♧,◇,♡,♤}         N = {♧,◇,♡,♤}
Therefore  M =N
n(M) = n(N) = 4
 
Remember:
When listing members of a set, order is not important.
 
 
 
Equivalent Sets
 
Two sets are equivalent if the number of members
in one set is equal to the number of members in the other set.
The members do not have to be identical.
The symbol for equivalent is
 
Example:
A = {cat, dog, rabbit}         B = {man, woman, child}
n(A) = n(B) = B
Therefore  A B
 
 
Remember:
 
Equal sets are equivalent but equivalent sets
 
are not necessarily equal.