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MATHEMATICS LEARNING PLAN

DEMONSTRATOR
DATE
GRADE LEVEL Content Standard: The learners understand the
STANDARD rules of negative numbers for Subtraction.
Discuss the negative numbers for subtraction that
PERFORMANCE
may help learners in identifying the accurate rule to
STANDARD
be used.

I. LEARNING OBJECTIVES
At the end of the lesson, the student should be able to:
a. Identify the rules of negative numbers for subtraction,
b. Perform the rules of negative numbers for subtraction, and
c. Value the important rules of negative numbers for subtraction.
II. SUBJECT MATTER
Topic: Rules of Positive and Negative Numbers for basic math operations
Reference: https://sciencenotes.org/rules-for-positive-and-negative-
number
Materials: Power Point presentation, marker, manila paper

III. LEARNING TASK

Teacher’s Activity Student’s Activity

PRAYER

Good evening class.


(The students will
respond)
May I request everyone to rise as we pray. The
economical prayer.

GREETINGS/CLASSROOM ARRANGEMENT

Good evening class. (The students will


respond)
Before we start, please pick up pieces of paper and
arrange your selves afterwards.
CHECKING OF ATTENDANCE

I will check your attendance, raise your hand when (The students will
your name is called. respond)

Nobody is absent. Very good.

CLASSROOM RULES
Before we’ll proceed, I want to remind you of our
classroom rules.
a. No using of cellphone while classes
started.
b. Unnecessary noise is discouraged.
c. Raise your hand for any clarification. (The students will
respond)
Is that clear?

REVIEW
Before we proceed to our next topic, let us have a (The students will raise
review. Who among you still remember what we their hands to answer)
discussed last meeting?
(The students will raise
their hands to answer:
Very good! About the basic math
operations Sir)

(The students will raise


Can anyone give the basic math operations? their hands to answer:
Addition, subtraction,
multiplication, division
Very good! Sir.)
MOTIVATION

Activity: FILM VIEWING


TRESPASSERS –BY JOHANNES
I am going to group you into four and I am
expecting for your cooperation. Please select a group
leader and secretary. All you need to do is to write the
main idea of the movie with at least 3 sentences in a
manila paper.
Criteria Percent %

1. Presentation is well done 25 %

2. Very clear information 25 %


3. Group Behaviour 25 %
4. Teamwork/Cooperation 25 %
TOTAL 100 %
(The students will stand
The teacher will start the presentation. and stick the answers on
the board)
Each group presented their activity.

Ask them:
1. What is the relation of the activity for the next
topic?
2. How can we apply those activity in real life
situations.

PRESENTATION/DISCUSSION

Before we continue, let’s read first our learning


objectives. Kindly read the objectives.

At the end of the lesson, the student should be able


to:
a. Identify the rules for positive and negative
numbers,
b. Perform the rules of negative numbers for
subtraction, and
c. Value the important of rules of negative numbers
for basic math operation.

-Today, we’ll discuss the rules of negative numbers for


the basic math operations.

Let us now discuss the rules of negative numbers then (The students will
apply in the basic math operations. respond)

Did I make myself clear?

Let us now proceed.


RULES OF NEGATIVE NUMBERS
 A negative number has a value less than zero.
Its sign is considered to be negative and it is
written with a minus sign in front of it (-2, -23).
 The sum of a positive number and its equal
negative number is zero.
 Zero is neither a positive nor negative number

Let us now apply the rules of negative numbers in


basic math operations,
Addition and Subtraction of Positive and Negative
Numbers

When you add or subtract positive and negative


numbers, the sign of the answer depends on whether
the signs are alike or which number has a larger
value.

Adding positive and negative numbers is simple when


both numbers have the same sign. Simply find the
sum of the numbers and keep the sign. For example:
3+2=5
(-4) + (-2) = -6

Find the sum of a positive and negative number by


subtracting the number with the smaller value from the
one with the larger value. The sign is that of the larger
number.

(-7) + 2 = -5
4 + (-8) = 4 – 8 = -4
(-3) + 8 = 5
10 + (-2) = 10 – 2 = 8
(-5) + 4 = -1

The rules for subtraction are similar to those of


addition. For two positive numbers, if the first number
is larger than the second, then the result is another
positive number.
12 – 10 = 2
4 -3 = 1

If you subtract a large positive number from a smaller


positive number, you get a negative number.
5 – 6 = -1
2 – 4 = -2

An easy way to do this is to subtract the smaller


number from the larger number and change the sign
of the answer to a minus.

When you subtract a positive number from a negative


number, it’s the same as adding a negative number. In
other words, it makes the negative number more
negative.
(-4) – 3 = (-4) + (-3) = -7
(-10) – 12 = (-10) + (-12) = -24

Subtracting a negative number from a positive number


cancels out the negative signs and becomes simple
addition. It makes the positive number more positive.
4 – (-3) = 4 + 3 = 7
5 – (-2) = 5 + 2 = 7

When you subtract a negative number from another


negative number, once again the negative signs
cancel each other to become a plus sign. The answer
has the sign of the larger number.
(-2) – (-7) = (-2) + 7 = 5
(-5) – (-3) = (-5) + 3 = -2

Multiplication and Division of Positive and Negative


Numbers

If you multiply or divide like signs, you get a positive


number. Multiplying or dividing positive and negative
numbers gives a negative number.

The rules for multiplication and division are simple:

If both numbers are positive, the result is positive.

If both numbers are negative, the result is positive.


(Basically, the two negative values cancel each other
out).

If one number is positive and the other is negative, the


result is negative
.
If you are multiplying or dividing multiple numbers with
signs, add up how many positive numbers there are
and how many negative numbers there are. The sign
in excess is the sign of the answer.

Multiplying any number (positive or negative) by zero


gives an answer of 0.

Zero divided by any numbers is 0.

Any number divided by zero is infinity.

Here are some examples. These examples use


integers (whole numbers), but the same rules apply to
decimals and fractions. (Answers may vary)
4 x 5 = 20
(-2) x (-3) = 6
(-6) x 3 = -18
7 x (-2) = -14
2 x (-3) x 4 = -24
(-2) x 2 x (-3) = 12
12 / 2 = 6
(-10) / 5 = -2
14 / (-7) = -2
(-6) / (-2) = 3

Analysis

Activity: Complete Me!


Direction: Complete the missing answer in the given
table.

(Some students will


Questions:
answer)
1. Do you now have the knowledge about the
branches of mathematics?
2. In our discussion, what do you think is the
importance in learning the different branches of
mathematics?
3. In your own opinion, who is good in
mathematics? Girls or boys?

Abstraction

1. As a student of Zamboanga Sibugay


Polytechnic Institute, how will you relate the
branches of mathematics in your other
subjects?
2. Being an individual, can you love the subject
mathematics despite of its problems and
challenges?

Excellent answers class.

Application

Okay class, for your output we’ll have an activity to


see if you really understand our lesson for today.

Instructions: Group yourselves into 3 groups. In a


piece of paper write down your understanding about
mathematics, the areas of mathematics, the branches
of mathematics and its importance. Select one
participant from each group to present the answers in
front. First one to present will have an additional
points. Please follow the scoring rubrics.

RUBRICS
DESCRIPTION POINTS
Timeliness 20 points
Teamwork/Cooperation 30 points
Presentation 20 points
Concept and Content 30 points
TOTAL 100 points

(The students will present their works in front of the


class)

Asked Questions:
1. What can you say about the activity?
2. Is it necessary to know the different branches
of mathematics?
3. As a student, what is the importance in learning
the different branches of mathematics?

Generalization

Okay, do you have any questions regarding our


discussion?

Okay, it seems that you understand the lesson. To


sum it up, who can define mathematics, the branches
of mathematics and its importance?

(calls a student)

EXCELLENT. The importance of learning the


branches of mathematics is to ensure that the
students are aware of the different branches of
mathematics as Maths is an extensive subject. They
are all interrelated in some manner but are completely
different from each other. All these branches together
help build a student’s reasoning power and the ability
to crack difficult problems.

IV. EVALUATION

Addition, Subtraction, Multiplication and Division of Positive and Negative


Numbers. Encircle the letter of the correct answer.
1. (-3)+(-7)=
a. 10 b. -10 c. 4 d. -4
2. (-4)-2=
a. 6 b. -6 c. -2 d. 2
3. (-2)x(-2)+
a. 4 b. -4 c. 0 d. 8
4. 16/(-4)=
a. 4 b. -12 c. -4 d. 20
5. (-3)x3x(-3)=
a. 27 b. -27 c. 9 d. -9
ANSWER KEY:
1) a
2) b
3) a
4) c.
5) a
V. HOMEWORK

Answer the following Problem using rules of Addition, Subtraction,


Multiplication and Division of Positive and Negative Numbers and show your
solution and send it to my gmail account before the end of this week.
1. -2+2x6-9=
2. 10x(-3)-26=
3. 36/(-6)x-3=
4. -50-50+19=
5. 24x6-100/(-4)=

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