Lesson-plan-Circle - Lesson-plan-Circle Lesson-plan-Circle Lesson-plan-Circle Lesson-plan-Circle PDF

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SCHOOL: GRADE LEVEL: 7TEACHER: JOEY ALBERT F. GABRIEL LEARNING AREA: Mathematics TEACHING DATE & TIME:May 17, 2019 (Tuesday) 6:30 AM – 12:40 PMQUARTER: THIRD QUARTERI. OBJECTIVESA. Content Standards The learner demonstrates understanding of key concepts of geometry of shapes and sizes, and g...

Description

1

SCHOOL: TEACHER:

JOEY ALBERT F. GABRIEL

GRADE LEVEL:

7

LEARNING AREA:

Mathematics

TEACHING May 17, 2019 (Tuesday) DATE & QUARTER: THIRD QUARTER 6:30 AM – 12:40 PM TIME: I. OBJECTIVES A. Content Standards The learner demonstrates understanding of key concepts of geometry of shapes and sizes, and geometric relationships. B. Performance Standards The learner is able to create models of plane figures and formulate and solve accurately authentic problems involving sides and angles of a polygon. The learner illustrate a circle and the terms related to: radius, C. Learning Competencies/ diameter chord, center, arc, chord, central angle and inscribed Objectives: angle. Write the LC code for each. M7GE-IIIg-1 A. Define circle At the end of the period, at least B. Illustrate the different parts of a circle. 80% of the students will be able to: C. Value the importance of attentiveness during class discussion. GEOMETRY II. CONTENT (Circle) III. LEARNING RESOURCES A. References 1. Teacher’s Guide Pages p. 282 - 285 2. Learner’s Materials p. 233 - 236 Pages 3. Textbook Pages 4. Additional Materials from Learning Resources (LR) Portal B. Other Learning Resources IV. PROCEDURES Teacher’s Task Student’s Task A. Reviewing Previous Lesson or Presenting New Lesson

Present the different types of polygons Question: 1.) What do you see in the picture? 2.) How many sides is the first figure? Can you name the polygon? 3.) How about the 2nd figure?

1.) Polygons 2.) 3, triangle 3.) 4 sides,

2 4.) How about the 3rd figure?

quadrilateral 4.) 5 sides, pentagon

5.) And the 4th one? The 5th one? How about the 6th figure? The 7th? And the last figure?

B. Establishing a Purpose for the Lesson

Present this figure Question: 1. How many sides are there in the figure? 2. Is this a polygon? 3. What do you think this figure called? Given this figure

1. None 2. No 3. Circle

Circle, because if it’s not circle the car will not move.

Question: What shape do you think will complete the image? Why? C. Presenting Examples/ Instances of the Lesson

Circle Circle is the set of all points that are the same distance from a fixed point. Note: A circle is named by its center.

D. Discussing New Concepts and Practicing New Skills #1

A Arc Radius Central Angle

Center

O

D

B

Insc ribe d An gle

Cho rd

5.) 6 sides hexagon, 7 sides heptagon, 8 sides octagon, 9 sides nonagon

C

3

Parts of a Circle 1. What is a Center?  The given point from which all points on a circle are the same distance. 2. What is a Circumference  The distance around the edge of a circle. 3. What is a Radius?  Distance from the center to any point of circumference. 4. What is a Chord?  A line segment whose endpoints are on the circle. 5. What is a Diameter?  It is chord that passes through the center of a circle. It is the longest chord of a circle and it is twice the length of the radius of a circle. 6. What is a secant?  A line that intersects the circle in two different points. 7. What is a tangent?  A line which touches a circle at just one point. 8. What is an Arc?  It is a portion of the circumference of a circle. 9. What is a Sector?  A circular sector or circle sector (symbol: ⌔), is the portion of a disk enclosed by two radii and an arc. 10. What is a segment?  The segment of a circle is the

4 region bounded by a chord and the arc. 11. What is a Central Angle?  It is an angle that forms when two radii meet at the center of a circle. 12. What is an Inscribed Angle?  It is an angle formed by two chords in a circle which have a common endpoint. E. Discussing New Concepts and Practicing New Skills #2

Find the measures of the diameter if radius is given and find the measures of radius if diameter is given.

1.)

1.) R Diameter 12cm 6cm

2.) 2.) Radius 14cm 28cm

3.) 3.)Diameter 30cm

15cm

5 4.)

4.) Radius 5m

10m

F. Developing Mastery (Leads To Formative Assessment 3)

On Circle O, give the following: 1. Name each radius.

1. Segment AO, DO, EO, BO 2. Segment AE, BD 3. Segment AE, BD, BE, BC 4....