Name
Schedule
: Neliza A. Sevilla BSED - II
: Educ 2B MWF 8:30 - 9:30 AM
Detailed Lesson Plan in Mathematics 7
I. Objectives
At the end of the lesson, the Grade 7 students can:
1. define what is an integer;
2. identify the rules of operations on integers;
3. relate integers involving operations on integers in real life application; and
4. solve problems using operations on integers.
II. Content
Topic: Algebra (Operations on Integers)
Reference: E-Math 1: Elementary Algebra pages 15-17
Author: Orlando Oronce
Materials: Picture collages, images, flash cards
Method: Inductive Method
III. Values and Skills
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Critical thinking
Self-confidence
Cooperation
Determination
IV. Teaching - Learning Process
Teacher’s Activity
Students’ Activity
A. Routinary Activities
Good morning, class!
Good morning, Ma’am.
Okay, let us pray.
Our Father ... Amen.
Before you take your seats, please pick (arrange chairs and pick up pieces of
up any pieces of paper or trashes. paper)
Then, please arrange your chairs
properly.
You may now take your seats.
(take seats)
Class, may I know who are absent for
today?
No one, Ma’am
Very good! It is nice to know that you (clap hands)
really love my subject, Mathematics.
So, let’s give everybody a round of
applause.
Now, we will have another interesting
topic for today. But, before that, let’s
play a game. Raise your hand if you
want games.
(raise hands)
B. Preparation
1. Motivation
Let’s play 4-Pics-1-Word. Are you
familiar with that?
Yes, Ma’am.
But, we will have this game a twist. (choosing of representatives)
Instead of giving letters as hints, you
will act the word being guessed. I will
divide the class into groups. The left
side is Group 1 and the right side is
Group 2. Then, both groups will choose
a representative to act the given
picture. The rest members of the group
will guess the word. The pictures to be
guessed have numbers and the
representative will pick by lot. I will only
give two minutes each group. The more
words to guess, the more you win. So,
choose your representatives.
Now, let’s begin with Group 1. (holds
the picture being chosen by the
representative)
(starting guessing)
(after two minutes) Time’s up. Good job, (starting guessing)
Group 1. Next is Group 2.
Two minutes passed. Thanks, Group 1.
The winner is __________. A round of
applause to everyone for a wonderful
game.
(clapping hands)
Class, what are the words being
guessed?
(read the words)
C. Presentation
So, what have you observed on those
words in our game.
The words are related to operations
because of the add, divide, subtract and
multiply.
Yes, those are operations. But, it will
have something to do with our new
topic for this morning.
Today, you will learn how to compute
numbers with signs, the positive and
negative in operations. And we will
encounter integers.
We will be having an activity. I will
(working together as groups)
divide the class into four groups. This
will be row groups. Each group will be
given flash cards with number problems
and corresponding letters. Then, you
will solve it as a group. After you solve,
the answers of the flash cards must be
arranged into lowest to highest value so
that you can get the hidden word. But,
how you will solve the number
problem? I will give you an “Ace” card.
This is a card containing the rules on
solving. The first group to finish and
accomplish the task will be the winner
and there will be a corresponding prize
for it.
D. Comparison and Abstraction
Among the cards, what operations are
used?
Addition, Subtraction, Multiplication,
Division.
Very good! These operations will help to
solve the numbers with signs.
These signs are?
Positive and Negative sign
If a number has a negative sign, what
does it imply?
It is below zero.
That’s right. If a number has no sign,
that is a positive number. What does it
mean?
It is above zero.
How did you get the answers on doing
the activity?
There are rules in solving operations on
integers.
E. Generalization
These are called integers. It is a
positive and negative whole number or
it’s exact opposites.
So, these integers can be applied on
operations. There are rules on getting
the answers.
First is in addition. What would be the
result if a positive integer is being
added to a positive integer.
The answer is a positive integer.
If a negative integer is added with a
negative integer?
The answer is a negative integer.
That’s right! The sign will stay as it is.
What would be the answer if a positive
integer is being added to a negative
integer?
The answer will depend on the bigger
integer.
In subtraction, this rule is the same with The answer is still positive.
addition. In multiplication and division,
they also have the same rules. If both
positive is being multiplied and divided,
the answer is?
If the factors have different signs?
The answer is a negative integer.
If the dividend and divisor have different
signs?
(posts some examples)
Then, this integers won’t be nothing if
this is not applicable to reality. Have you
notice about thermometers? There is a
negative integer because there are
temperatures which are below 0°. It is
the decrease of temperature. Then,
when you deposit a money in your bank
account. Your savings will rise. There
will be positive money on a bank.
Integers really help in keeping the world
on working.
F. Application
In your seats, make at least 5 examples
which can be applicable in real life
situations. Then, exchange with your
seatmate. Let your seatmate answer it.
I will give you 10 minutes to do your
task.
Yes, Ma’am.
(after 10 minutes)
Give back the paper then let the maker
of the examples check the answers of
his/her seatmate. Then, after checking,
pass the papers to me.
G. Evaluation
Direction: In a 1/2 sheet of paper,
answer the following:
1. -8 + 20 =
2. 90 - 105 =
3. 50/-5 =
4. 6*10 =
5. -7*-300 =
6. -100/10 =
7. -5 + -2 =
8. -2 - 4 =
9. 0*-2 =
10. 34*-12 =
H. Assignment
Direction: Fill in the blanks.
1. ___ * - 40 = 80
2. 6 - ___ = -28
3. 45 / -9 = ___
4. -9 * -367 = ___
5. -2 + ___ = -78