Lesson Plan in MathematicsGrade 5

Grade V – Acacia (7:50-8:50)

I. Learning Objectives

Cognitive: Visualize circleIdentify radius and diameter

Psychomotor: Illustrate circles with different radiiAffective: find enjoyment in doing the activity

II. Learning Content

Skills: Visualizing circleIdentifying radius and diameter

Reference: BEC-PELC III.3 Mathematics 5: Mathematics for the Better Future, Coronel And bamba, pp. 232-237

Materials: PPT presentationValue: Accuracy in Measurement

III. Learning Experiences

A. Preparatory Activities

1. Drill a. Have the pupils identify which of these is a circle.

2. Review a. When can we say that a figure is a polygon?

3. Motivation

Ask the pupils: “Is Circle a polygon? Why? Why not?

B. Developmental Activities

1. Presentation

a. Have the pupils observe the circles below. Take a look at each of the circles. Do you find any line segment?

b. Use circle zero to complete the following statements:

A

F

G M

1. The distance from point O to point F is ______.2. The distance from point O to point M is ______.3. The distance from Point O to point G is ______.4. If point G, O, and F lie on one line, the distance from point G to

point F is _______.

c. Have the pupils observed the circle. Introduce the Radius and Diameter of a circle. Show examples of radius that are connected to the tangent and from a center. Use compass in drawing a circle.

3. Generalization

A circle is a closed plane figure that is not made up of line segments, so it is not a polygon. A circle named by its center.

2 cm

O

A circle is a set of all points in a plane that are at a fixed distance from a point called center.

A radius is a line segment from the center to a point on the circle.

A diameter is a line segment which passes through the center of a circle and whose

endpoints are on the circle.

4. Application 1. Refer to circle O. Explain why OP AND OQ do not form a diameter.

P

Q

IV. Evaluation

Use circle O to answer the following.

a. Name two diameters:

1.

2.

c. Name six radii

1. 2. 3. 4. 5. 6.

V. Assignment:

Use a real compass or an improvised one to draw circles with these given radii.

A circle is a set of all points in a plane that are at a fixed distance from a point called center.

A radius is a line segment from the center to a point on the circle.

A diameter is a line segment which passes through the center of a circle and whose

endpoints are on the circle.

O

1. 1 cm

2. 1.5 cm

3. 2.5 cm

4. 6 cm

5. 7 inches