A Detailed Lesson Plan

A Detailed Lesson Plan in Mathematics IV

I-Objectives: At the end of the lesson, the pupils are expected to: 1. Identify the parts of a circle. 2. Draw a circle and show its parts. 3. Show cooperation in group activities. II-Subject Matter: Skills:

1. Identifying the parts of a circle 2. Drawing a circle and showing its parts. References: BEC-PELC III A. 1. 2. Mathematics for every Life, 4 pp. 180-181 Materials: Cut outs of Circles, drawing of circles Value: Cooperation

III-Procedure: Teacher’s Activity A. Preliminary Activities 1. Prayer Let us pray, Heavenly Father… 2. Greetings Good morning children?

3. Opening Song Let us sing the song Mathematics.

Pupil’s Activity

Heavenly Father..

Good morning, Sir Good morning, Classmates. Good morning.

(The pupils are singing)

4. Checking of Attendance Who are absent today class? 5. Setting of Classroom Standards When I’m talking in front, what you are going to do? If you want to answer, what will you do?

None, Sir.

Listen carefully. Just raise our right hand.

6. Drill Class, I have here different figures. As I show each one to you, give the name of the figures.

Circle

Triangle

Rectangle

Square

Trapezoid

Rhombus

7. Checking of Assignments Ok class pass your assignment

8. Review What was our lesson yesterday?

Our lesson yesterday was all about parts of a Quadrilateral.

Very good. I have here a picture of a house. Identify the square, the rectangle, and the trapezoid by naming the parts of the house. Kindly come forward and show your answer. John Carl? Very good Another Peter John? Correct.

The roof is a trapezoid. The window is square.

Cesar Excellent Answer.

The door is rectangle.

B. Lesson Proper 1. Motivation Can you name this object in my right hand?

That is a ball.

What is the shape of the ball?

The shape of the ball is circle.

2. Presentation This morning we are going to study about circles. 3. Group Activity Now I will divide you into 3 groups for your group activity. But before that, can you still remember the standards in performing group activity?

-

We should cooperate with our group. We must help our group.

a. You cut a circle. Fold the circle into 2 equal parts, then mark the center of the circle with an X, at the top endpoint of the fold mark A and the bottom endpoint of the fold mark A and the bottom endpoint of the fold, mark B. A to B is line segment that divides the circle into 2 equal parts. This is called diameter. Diameter divides the circle into 2 equal parts. b. This time, fold again the circle into 2 equal parts, at the top endpoint of the fold, mark C and the bottom endpoint of the fold, mark D. This will form different line segments from the center. The line segment from center X to endpoint C is called radius. The line segment XA, XB, XC and XD are the radii of the circle. c. The line that surrounds the circle is called circumference. At this time, you try to answer this question.

R

T

V

U

S 1. Which line segment determines

1. TU and RS

the diameter? 2. What line segment determines the radius of the circle?

2. VT, VU, VR and VS

4. Group Reporting Now the group leader will now report their answer.

5. Generalization What is diameter?

Diameter is a line segment that passes through the center and has its endpoints on the circle.

What is radius?

Radius is a line segment from the center to any point on the circle.

What is circumference?

Circumference is a line that surrounds the circle.

What are the parts of the circle?

The parts of the circle are diameter, radius and circumference.

6. Application Class, using the circle and line segment answer the following:

K

O

P

R

M

N

Name the center?

Point O is the center of the circle.

What are 5 radii?

The line segment are OK, OR, ON, OM, and OP.

Show us the circumference?

This is the circumference.

IV- Evaluation Using the circle on line segment, identify the following parts of the circle. Write only the letter of the correct answer.

A

F

B

C

E

Z 1. BC a. radius b. diameter c. circumference

2. FD a. circumference b. radius c. diameter

3. FC a. diameter b. radius c. circumference 4. AD a. radius b. circumference c. diameter

V-Assignment Draw a circle showing the following: S as the center ST as a diameter SY as a radius SX as a radius SO as a radius