A DETAILED LESSON PLAN
MATHEMATICS 7
I. OBJECTIVES:
At the end of the lesson, the students must be able to:
a) determine the value of the numerical expressions using PEMDAS;
b) evaluate algebraic expressions for given values of the variables; and
c) simplify algebraic expressions with speed and accuracy.
II. SUBJECT MATTER
Topic: Evaluate Algebraic Expressions (M7AL-IIC-4)
Reference: MELCS
Exploring Mathematics
Elementary Algebra by Orlando Orance pages 215-218
Time Allotment: 1 hour
Materials: PowerPoint Presentation, TV, bond paper, colored paper and box.
III. PROCEDURE
Teacher’s Activity Students Activity
A. Daily Routine
a) Prayer
b) Greetings
c) Checking of attendance
d.) State the objectives.
B. Activity
To meet these objectives let’s have an activity.
“TAMA KA, MAY POINT KA”
INSTRUCTION: I have here a box with strip
of papers with your names. I will pick a strip
of papers who will recite and if you got the
correct answer you have a chance to pick a
strip of papers in the other box. A box with
strip of papers with different colors. Pink - 5
points, Red-3 points, and white-1 point. But if
you got wrong someone will steal. You are all
given a chance to recite throughout the
activities and earn points at the end of class.
Picture the strips you have and send it to me
through messenger.
Activity 1: Simplify Me!
Direction: Simplify the following numerical
expressions :
1. 25 + 15 = ?
(one of the students will lead the prayer)
At the end of the lesson, the students must be
able to:
a) determine the value of the numerical
expressions using PEMDAS;
b) evaluate algebraic expressions for
given values of the variables; and
c) simplify algebraic expressions with
speed and accuracy
2. 5 x 12 – 10 = ?
3. 105 x 2 = ?
4. 3 ( 2 + 3) = ?
5. 10( 5 - 3) = ?
The activity is a prerequisite for our lesson
for today that is
Evaluating Algebraic Expressions.
C. Analysis:
Examples:
1. Evaluate a+5 when a=2.
Very good!
How did you get it?
2. Evaluate b-5 when b=10.
You are correct!
(Student name) can you explain, how do we
get 5?
3. Evaluate 5x when x=-6
Excellent!
Explain, how did you get -30?(pick a name)
4. If x = 7, what is 21x?
(Student name) explain, how did you get 3?
Very good!
Did you understand it class?
C. Abstraction
Let’s try this activity.
Activity 2. What’s My Value!
1. What is the value of L + O – V + E, if L =
5, O = 3, V = 2, and E=1.
2. If y = 10, what is 5y + 12?
1. 40
2. 50
3. 1
4. 15
5. 5
7
a+5
2+5; substitute 2 for a.
7
5
b-5
10-5; substitute10 for b.
5
-30
5x
5(-6); substitute -6 for x.
-30
3
217; substitute 7 for x
3
Yes ma’am.
1. 7
3. Evaluate C ÷ O + V – I + D when C=9, O =
3, V = 5, I = 2 and D =1.
4. If C = 10, A = 1, R = 2 and E = 10, what is
CA+RE?
5. Evaluate 5(a-5) when a=15.
Based from the activity, how do you evaluate
algebraic expressions?
D. Application
Now class, bring out a sheet paper and do the
activity.
After answering, picture your answer and
open your data, open your data, go to browser
or Google then, click search and type
classpoint.com. Click class point app-enter
class code and join! Enter the code and your
Name class. Then click join.
Activity 3. Compare Me! ( 15 minutes)
Direction: Compare the value of the following
expressions when x = 2, y =1 and z = 4.
1. x + 1 + y _____ x – 1 - y
2. y - x ______ x + y
3. 2 – 3 + x ______ 2 + 3 - z
4. z + 2 – y ______ z – 2 + y
5. x – z _____ z + x
6. 2x – 4 _____ 2x ÷ 2
7. 3(y +5) _____ 5y + 3
8. 24 – z _____ z – 24
9. x + y + z _____ xyz
10. x (y – z) _____ (x –y) + z
The time starts now class.
(After 10 minutes)
Times up class! Stop answering and send it on
class point class.
IV. Evaluation
Let’s take another activity class.
Activity 4. Protocol: New Normal
Direction: Evaluate each algebraic
expression, Match column A to column B,
You are going to write only the letters that
corresponds to the value of each algebraic
2. 62
3. 7
4. 30
5. 50
(possible answer)
To evaluate an algebraic expression,
substitute a number for the variable and
simplify.
Students start answering.
Yes ma’am (the student will send it in class
point).
expressions below.
COLUMN A
_____ 1. 9�+3 �ℎ��� �=5
_____2. 15�−24�+15 �ℎ��� �=3 ��� �=2
_____3. �+3(�−1) �ℎ��� � = 2
_____4. 3�−2�+5 �ℎ��� �=2 ,��� �=4
_____5. 4� ÷ (12−2�) �ℎ��� �=12 ���
�=2
_____6. (4�−9�) ÷ 7 �ℎ��� �=2 ��� �=4
_____7.4(�−3)+ 3(�+2) �ℎ��� �=5
_____8. (5�÷2) + 2(1−�)�ℎ��� �=2
_____9. 9�+5�5� �ℎ��� �=5,�=3, z = 1
_____10.4� + 3�−5 �ℎ��� �= −2,�=7
_____11. (6� ÷3)−2� �ℎ��� �=5,�=2
_____12. (5+�) + 2 �ℎ��� �=3
_____13(2�+5) ÷ 3 where a =5
_____14. (5�+2) ÷ 2� where x =2
_____15. (3�−4�)+ 6 ,�ℎ��� �=8,�=5
_____16. (9�−3�)÷ 3 ,�ℎ��� �=5 ,�= −5
In this activity you are given 15 minutes to
answer it.
(after 15 minutes)Time’s up class! Again, pass
your answer in the class point.
V. Assignment
Direction. Analyze and answer. Illustrate the
figure.
1. Find the perimeter of the polygon whose
consecutive sides are 3x , x , x2, 5x , x + 1 and
2x where x = 2 cm.
2. Find the area of the rectangle whose sides
are 3x2 – 2 and x + 2, where x = 5 mm.
I’ll send this activity in our gc and PM me for
your answers.
That’s all for today class. Thank you and God
bless!
Good bye class!
Column B
A= 6
C=5
I =3
D =29
T =8
N = 10
O= 12
L= -4
G = 20
Z= -1
Q= 0
W= 9
V- 14
U= 13
K =11
S = 48
Students starts in answering.
(students pass their answers)
Yes ma’am.
Welcome ma’am
Good bye ma’am
Prepared by:
MAY FLOR CORREA
FS Student
Checked by: Approved by
ANALIZA T. DANNUG, TIII THELMA E. CARAM, MT 3
Resource Teacher
Math Coordinator