math

1. CLASS: MATH FORM 1
TOPIC OF LESSON: Set Theory II
MODULE / SECTION: Module 1 - Number & Number
Sense

2. OBJECTIVES
SYLLABUS OBJECTIVE(S) [OBJETIVO DE SYLLABUS]
Candidate should be able to:
Classify types of numbers using the knowledge of Set Theory
El candidato debe ser capaz de:
Clasifique los tipos de números usando el conocimiento de la teoría de
conjuntos.

3. OBJECTIVES
LESSON OBJECTIVE(S) [OBJETIVOS DE LA LECCIÓN]
By the end of this lesson, the student should be able to:
● Explain the features of union and intersection, including examples from number classification;
● Describe the set notation for union and intersection;
● Interpret set notation that includes that for union and intersection.
Al final de esta lección, el estudiante debe ser capaz de:
● Explicar las características de unión e intersección, incluidos ejemplos de clasificación de
números;
● Describe la notación de conjunto para unión e intersección;
● Interpretar la notación del conjunto que incluye eso para la unión y la intersección.

4. PREREQUISITE LESSON(S)
[LECCION DE PRERREQUISITO]
Make sure to complete these lessons before doing this one:
[Make sure to hyperlink the lesson]
Set Theory I

5. INTRODUCTION [INTRODUCCIÓN]
The diagram below shows various shapes:

6. INTRODUCTION [INTRODUCCIÓN] cont’d/…
What if we placed these shapes in different groups?
★ Shapes with 4 sides = A & F
★ Shapes with all lines of equal length = A & B
As you can see, A, belongs to both groups. In Set Theory, this is
called an INTERSECTION.
¿Qué pasa si colocamos estas formas en diferentes grupos?
★ Formas con 4 lados = A y F
★ Formas con todas las líneas de igual longitud = A y B
Como puedes ver, A, pertenece a ambos grupos. En Teoría de
conjuntos, esto se llama una INTERSECCIÓN.
In this lesson we will be looking at intersections and unions, as
described in Set Theory.

7. EXPLANATION
Watch this video for an explanation of intersection and union in Sets.
https://edpuzzle.com/media/5d07957e0d7277411fd98dc8
Here are two examples, using the types of numbers:

8. EXPLANATION cont’d/...
Example 1

9. EXPLANATION cont’d/...
Example 2

10. Here are some practice
examples:

11. PRACTICE QUESTIONS I
Move mouse
over the box
and click on
the triangle.
Watch the
video.

12. PRACTICE QUESTIONS I

13. PRACTICE QUESTIONS II
Move mouse
over the box and
click on the
triangle.
Watch the video.

14. PRACTICE QUESTIONS II

15. PRACTICE QUESTIONS III

16. PLEASE TRY THIS AT HOME
Answer these questions on your own.
Share your answers in the Class Group and/or tutorials with your instructor.
Click on the link below and download.
https://drive.google.com/open?id=1149RbW_0P4ycJC0N-vCCrnbBwz71pqt1

17. SUMMARY
● Intersection and union are both Operations of Sets.
● Intersection is a list of all the elements that are in both stated sets.
● The symbol for Intersection is ∩
● Union is a list of all the elements that are in either set.
● When listing elements of a Union, do not repeat elements that are present in both sets
● The symbol for Union ∪

18. Now Let’s See if You Understand...
[h5p resource. Please embed]
https://h5p.org/node/534566

19. REFERENCES
Khan Academy, 2013, Intersection and union of sets | Probability and
Statistics | Khan Academy, viewed on 17th June 2019 and modified via
Edpuzzle, < https://youtu.be/jAfNg3ylZAI >