LESSON PLAN
I.
Objectives:
At the end of the lesson, the students are expected to be able to:
 write expressions with rational exponents as radical and vice versa.
II.
Subject Matter
 Topic: Radicals
 Reference: Grade 9 Book; page 254
 Materials: Chalk Board
Marker
Manila Paper
III.
Procedure
A. Preliminary
 Prayer
 Attendance
 Review
B. Lesson Proper
1.Activity
Identify the words that are related to our new topic.
GROUP1
Instruction: Inside the cross-word puzzle find 2 words which you think related
to our new topic.
R
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A S
G H J
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GROUP 2
Instruction: Inside the cross-word puzzle find 2 words which you think related
to our new topic.
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2. Analysis
a. What is radical?
b. Determine the parts of radical.
3. Abstraction
𝑛
The symbol √𝑎 is called radical. A radical expression or radical is an expression
𝑛
containing the symbol √ called radical sign. In the symbol √𝑎 , n is called the index
or order which indicates the degree of radical such as square root √ cube root ∛ and
fourth root ∜ , 𝑎𝑚 is called a radicand which is a number of expression inside the
radical symbol and m is the power of exponent of the radicand.
If
𝑚
𝑛
𝑛
is a rational number and a is a positive real number, then I
𝑛
𝑛
𝑚
𝑎
𝑛
= √𝑎 =
( √𝑎) provided that √𝑎 is a real number. The form ( √𝑎) =𝑎𝑚/𝑛 is called a principal
nth root of am. through this, we can write experessions with rational exponents as
radicals.
Examples;
Examples;
Write experessions with radicals as rational exponents.

4. Application
1.
Evaluation
A. Matching type. Choose the correct answer in each the following.
1. 𝑎4/5
2. (2𝑚𝑛)2/5
3. √6𝑥
4. 501/8
3
5. (√3𝑏)
6. (√21)
7. (3𝑚 𝑛)2/5
8. (𝑎 + 𝑏)4/5
9. 𝑝𝑚1/2
3
10. ( √5)
IV.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
217/2
(3𝑏)2/3
54/3
5
a√𝑏
3
√4𝑚 𝑛
8
√50
6𝑥 5/2
3
√9𝑚 𝑛
5
√(𝑎 + 𝑏)
5
√𝑎
Assignment
In ½ sheet of paper, solve the following items.
Part 1
Write each of the following in radical form. Express your answer in simplified form.
1. 3𝑐 2/3=
2. (3𝑛)3/5 =
3. 5𝑛2/3 =
3
4. (2𝑝 ) =
5. 𝑑2/3 =
Part 2
Write each of the following in rational form:
4
1. √9𝑚=
2. √5=
3. √(5𝑎𝑏)=
4
4. √9𝑚=
5 27
5. √ =
64
Prepared by:
Checked by:
Glonie Joy B. Repulles
Field Study Student
Ellen Payapaya
Resource Teacher
GROUP1
Instruction: Inside the cross-word puzzle find 2 words which
you think related to our new topic.
R
H
J
X
F
G
R
T
R
H
G
Z
Z
Q
W
H
A
A
I
C
W
A
Q
J
S
H
D
S
R
X
S
K
G
F
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P
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GROUP 2
Instruction: Inside the cross-word puzzle find 2 words which
you think related to our new topic.
E
X
P
R
E
S
S
I
O
N
A
P
S
O
R
Q
Y
C
U
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