Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School DETAILED LESSON PLAN IN MATHEMATICS 7 I. OBJECTIVES At the end of 60-minute period with 80% proficiency level, the students are expected to: a. define a polygon; b. illustrate the different classifications of polygons; and c. appreciate the value of polygons to real-life situations. II. SUBJECT MATTER a. Topic: Polygons b. Competency: Illustrate polygons: (a) angles, and (b) sides c. Reference: E-Math 7 (Chapter 5, Lesson 5.5), p.430 MJXWWJhttps://www.scribd.com/document/406416471/DLP https://www.storyofmathematics.com/polygons-definition d. Materials: Learner’s Material, DLP, laptop, Visual Aids e. Strategy: Discussion Strategy, Group Discussion Strategy, Collaborative Approach III. PROCEDURE TEACHER’S ACTIVITY A. Preliminary Activities a. Prayer - Who will lead the prayer? STUDENTS’ ACTIVITY - Father in heaven ……………..amen. b. Greetings - Good morning class. - Good morning ma’am. c. Checking of Attendance - Class secretary, who is absent today? - No one is absent ma’am. d. Setting of Classroom Standards - What are the things you need to do when - Listen attentively. the class is going on? - Raise your hand if you want to answer. - Participate to every group activities. e. Review - Let’s recall our lesson last week. Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School 1. A ______ is a closed curve, all points of which are equidistant from a fixed point called the center. - Circle ma’am. 2. What is the name of circle below? - Circle O ma’am. That’s right, circles are named by their centers using capital letters. 3. What are the lines related to circle? -Radius ma’am. -Diameter ma’am. -Secant ma’am. -Chord ma’am. -Tangent ma’am -Very good! f. Motivation “Stop That Mystery Box” -Inside the box are pictures of different figures. When the music starts Jairon will pass the mystery box. And if the music stop, the one who is holding the box will pick one picture and answer the following questions; a. How many sides are there in the figure? b. What shape is represented by the figure? (The following are the figures inside the box) (The music starts then stop, student will pick one picture and answer the questions) - There are three sides in the figure and its shape is triangle ma’am. (The music starts then stop, student will pick one picture and answer the questions) - There are four sides in the figure and it is quadrilateral ma’am. (The music starts then stop, student will pick one picture and answer the questions) Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School -There are five sides in the figure and its shape is pentagon ma’am. (The music starts then stop, student will pick one picture and answer the questions) - There are six sides in the figure and its shape is hexagon ma’am. (The music starts then stop, student will pick one picture and answer the questions) - There are eight sides in the figure and its shape is octagon. -Very good! g. Presentation 1. Topic -Based on the activity, what do you think is our lesson for today? -Polygon ma’am. -Very good! About “POLYGONS”. 2. Objectives -These are our objectives. Everybody (Students read the objectives.) please read. -At the end of 60-minute period with 80% proficiency level, the students are expected to: a. define a polygon; b. illustrate the different classifications of polygons; and c. appreciate the value of polygons to reallife situations. h. Groupings - This time, go to your respective group (Students go to their respective group.) for an activity. “LOVE or LIKE ” -The class will be divided into four groups. Each group will be given a love Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School sign and like sign. I will show pictures of different figures and each group will decide whether the figures are polygon or not. Raise LOVE if the answer is polygon and LIKE if not. (The students raised LOVE sign.) (The students raised LOVE sign.) (The students raised LIKE sign.) (The students raised LOVE sign.) (The students raised Like sign.) Guide Questions: 1. How can you say that a figure is a polygon? - Polygon is flat or plane, two-dimensional closed shaped with straight sides. -It does not have curved sides. - Very good! Now Observe and study: - Match the Greek prefix from Column A to its meaning in Column B. COLUMN A COLUMN B ____1. Hepta ____2. Tri ____3. Penta ____4. Octa ____5. Quad ____6. Hexa ____7.Nona ____8. Deca a. A shape with five sides b. A shape with seven sides c. Four sides d. A shape with 6 sides e. Nine sides f. A shape with 10 sides g. Eight sides h. Is a numerical prefix meaning three Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School - Share your ideas with your group (Students observe, study and share their members and prepare for the questions to ideas to their members.) be given afterwards. I’ll give you five minutes. b. Analysis - Based on your observation, what is the possible answer for Column A, number - B ma’am. 1? - How about no. 2? - H ma’am. - No. 3? No. 4? No. 5? No. 6? No. 7? No. - A, G, C, D, E and F 8? - How did you come up with your - As a group, we share our ideas and deep answers? understanding about the Greek prefixes in column A. - We already have the basic knowledge about shapes during our elementary days. - Well done everyone! Give yourself 3 claps. c. Abstraction - In mathematics, a polygon is a closed (Students listen attentively to the discussion.) two dimensional figure made up of line segments but not curves. The term polygon originates from the Greek word “poly -” meaning “many” and “- gon,” meaning “angles.” Polygons are named according to the number of sides and angles they have. Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School Types of Polygons: Depending on the sides and angles, the polygons are classified into different types, namely: 1. Regular Polygon 2. Irregular Polygon Regular Polygon A regular polygon is a polygon in which all the interior angles are equal, and also, all the sides are equal. Irregular Polygon An irregular polygon is a polygon with a different measure of angles and side lengths. Now, who will go to the board and draw (Student draw a regular polygon.) one example of regular polygon? - Very good! - How about irregular polygon? (Student draw an irregular polygon.) Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School - Perfect! - Why is it important to study polygons? - Polygon is important for us to have some wonderful building structure. - Polygon is important to make patterns. - Polygon is important because without it there is no organization of the objects around us. - Great ideas. Keep it up! Give them some claps. Here are some examples of polygons in real-life situations. - What else? Do you have any ideas/ examples to share? - Any questions about the topic? -None ma’am. Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School d. Application - This will be our rubrics in your group (Students listen to the teacher while reading activity. the rubrics.) - Yes ma’am. - Is that clear? - Supply managers each group, kindly get (Supply managers come forward) your materials here. Group Activity Direction: 1. Cut the colored papers inside the (Students do and cooperate the activity given brown envelope applying the different to them.) polygons that you have learned. 2. One polygon each colored paper. 3. Paste it in the manila paper then classify each polygon that you have made. - I’ll give you 10 minutes to do the activity. Start! C. Closure Activity Generalization - What is a Polygon? - A polygon is a closed two-dimensional figure made up of line segments. - How do you know if a polygon is a - A regular polygon is a polygon in which all regular? the interior angles and all sides are equal. Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School - How about irregular polygon? Irregular polygon is a polygon with a different measure of angles and side lengths. - How are you going to apply polygons in - We apply it in designing modern structures. real-life situation? - We apply it in making business like making lanterns, pots, tables, etc. - Wow great thoughts. I am impressed with all of you. IV. EVALUATION Answer the following questions. 1. Define the following polygons. a. Rectangle b. Pentagon c. Octagon 2. Illustrate the different classifications of polygons. a. 2 regular polygons b. 2 irregular polygon Write the name of polygon on the space provided. Use the word bank to help. Rectangle Pentagon Octagon Hexagon Nonagon _____________1. A plane figure with four straight sides and four right angles, especially one with unequal adjacent sides, in contrast to a square. _____________2. A plane figure with eight straight sides and eight angles. Republic of the Philippines Department of Education Region II – Cagayan Valley Schools Division of Nueva Vizcaya Mapayao Integrated School _____________3. A plane figure with five straight sides and five angles. _____________4. A plane figure with six straight sides and angles. _____________5. A plane figure with nine straight sides and angles. Identify whether the polygons below are REGULAR or IRREGULAR . Write your answer on the space provided before the number. _______________1. ________________4. _______________ 2. ________________ 5. _______________3. V. ASSIGNMENT Direction: In your Math notebook, define “Triangle” and draw the different classification of triangles according to its sides and to its angles. PREPARED BY: MARJORIE I. FIANZA Teacher Applicant
