LESSON PLAN
Subject
Grade
Standard of Competency
:
:
Mathematics
VIII
Basic Competency
: ALGEBRA
3. Understanding the form of algebra, relation, function,
and straight line equation
: 3.3 Understanding relation and function
Indicators
: 1. Classifying relation and function
Time Allocation
: 1 x 10 minutes
A. Learning Objectives
1. Students are able to differentiate which one is relation and which one is function.
2. Studenta are able to present the relation or function in a diagram of arrow, diagram of
cartesian, or in a set of orderly pairs.
B. Material
1. Relation
Relation from set A to set B is a rule that pair the elements of A to the elements of B.
Relation between two sets can be declared by using :
a. Diagram of Arrow
b. Diagram of Cartesian
c. Set of Orderly Pairs
2. Function
Mapping or function from set A to set B is a partcular relation that pair each element
of A to exact one element of B.
Function between two sets can be declared by using :
a. Diagram of Arrow
b. Diagram of Cartesian
c. Set of Orderly Pairs
C.
Learning Methods
Speech, discussion, assessment.
D.
Learning Activities
No.
Activities
Time
Allocation
1.
Preliminary
a. At the previous lesson, students have already learn about relation
and function, so teacher reminds them about relation and function,
and also how to declare relation and function.
b. Teacher tells student that today they will review about relation and
2 minutes
function before continuing to the next lesson.
c. Teacher asks students to sit in a small group consist of three people
and tell what they have to do with their group.
2.
Main
a. Teacher gives a short story to each group. Each story is related to
relation or function. Two students from each group have to present
the story in a diagram of arrow, diagram of Cartesian, or set of
orderly pairs. While, one person left in a group will present the
7 minutes
result in front of the class without knowing the story first. Two
students in a group will give guidance to the other one, and the only
student will tell whether his/ her friend work is a relation or a
function.
3.
Closing
a. Teacher asks students to summarize what they have learned today.
1 minute
b. Teacher inform that they will learn about one-to-one function and
they can find the task for that material at the teacher’s blog.
E.
Learning Source
- Mathematic Textbook for Student in 8th Grade published by Erlangga and the author are
M. Cholik Adinawan and Sugijono.
- The story about relation and function
F.
Assessment
Technique
:
Form of Instrument :
Instruments
group test
short essay
:
1. Ina is a student at ”Selalu Juara” learning consultant. She takes class in Monday, Tuesday,
Wednesday, and Thursday. In a day, she will learn two subjects and here is her schedule
for this week.
Monday
Tuesday
Wednesday
Thursday
Mathematic
English
Religion
Civics
Indonesian
Physic
History
Chemistry
a. Make a diagram of cartesian from Ina’s schedule.
b. Decide whether it is a relation or a function.
2. Miranti, Janesa, and Vira are friends. Miranti is a socialite. She always make herself
update, so that is why she has all of applications of social media in her iPhone. Janesa is
same as Miranti, but not so with Vira. Here is their conversation in a beautiful night.
Miranti
: ”Look, I have just installed Instagram in my iPhone”
Janesa
: ”Seriously? Oh, the network in my phone is bad right now. I cannot
download that application. What is your username? I will follow you as
soon as I have Instagram account.”
Miranti
: ”@mira.mira. Anyway, do you have LINE, KakaoTalk, WeChat account,
Janesa?”
Janesa
: ”I have LINE and WeChat account, but I do not have KakaoTalk, you?”
Miranti
: ”Of course I have already had all of them. Vira, what are you doing?”
Vira
: ”Oh, I just send texts to my cousins.”
Janesa
: ”Why do not use other application, like LINE, KakaoTalk, or WeChat,
Vira? Those all are easier than sending texts?
Vira
: ”I do not have any of them.”
Miranti & Janesa : ”Oh.”
a. Make a diagram of arrow from their conversation about kind of social media that they
have.
b. Decide whether it is a relation or a function.
3. On Thursday, Kana learns social subject in her class. Her teacher said that today they will
learn about capital city of countries around the world. Each student in the class will get
different list of capital city. This is the list that is given by the teacher to Kana.
Country
Capital City
Indonesia
Jakarta
Malaysia
Kuala Lumpur
Kamboja
Phom Penh
Australia
Canberra
a. Make a set of orderly pairs from Kana’s list.
b.Decide whether it is a relation or a function.
Palembang,
Headmaster of ......................
...............................................
NIP. ..............................
Juli 2017
Teacher,
Nurdinawati Kudus
NIP. ................................