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Detailed Lesson Plan for Mathematics 5 (Identifying Polygons)


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Detailed Lesson Plan for Mathematics 5 (Identifying Polygons)

  1. 1. Department of Education Talisay City Division Linao Elementary School A Detailed Lesson Plan in Mathematics for Grade V I. Objectives: At the end of the lesson, 80% of the Grade V pupils should be able to: a. identify the different kinds of polygons; b. actively participates in searching and taking pictures of polygons around the school premises; and c. precisely give the number sides and angles of a given polygon. II. SubjectMatter: Topic: IdentifyingPolygons References:OurWorldof Math 5, pages318- 321 by Noel M.Menor Materials:visual aids,cut-outshapes,pictures,digital camera III. Procedure: Teacher’s Activity Pupil’s Activity A. Routinary Activity “Good morning,class!” “Let us prayfirst…” (Checkingof Attendance) “Classhoware you today?” “Okay!That’s great.So, are you readyto listen to our newtopictoday?” “Now,let’sbeginwithagroupactivity.Are you ready?” B. Motivation Group Activity:(The studentwill be dividedinto five.Eachgroup will be givenwithmaterials and instructionswrittenonit. Everygroupare given3 minutestoanswerthe activity) Group 1: Group 2: “Good morning,Ma’am!” (One studentwill leadthe prayer) (The studentsmaycome up withthe following answers.)
  2. 2. Teacher’s Activity Pupil’s Activity Group 3: Group 4: Group 5: C. Presentation VeryGood.Group 2 got the correct answerto the guessthe word game whichis POLYGONS. Now,letme introduce toyouthe different typesof polygons.Would someonereadthis definitionof polygonforme? Thanks.Do you knowthatpolygonsare named accordingto the numberof itssides? Okay!Now,let’stake a lookat the figureswith group1 came up with.(While pointingatthe triangle,the teacherwill ask the students.) What shape isthis?Can anyone tell me what makesa triangle differentfromothershapes? Polygonis a closedplane figure made upof three or more line segmentsjoinedattheir endpoints. Triangle A triangle hasthree sides. It has three angles. “tri” which means“3” (The teacherwill write these propertiesbelow the shape on the board.)
  3. 3. Nice answers!Inadditiontoyouranswers, triangle hasa prefix “tri” which means“3”. Let’sproceedwiththe nextpolygon.(While pointingatthe quadrilateral,the teacherwill ask the students.) Whatpolygonisthis?What can you tell me aboutit? Continue byexplainingthat “quad meansfour”. Then,write quadmeansfourbelow the quadrilateral. Let’sproceedwiththe nextpolygon.(While pointingatthe pentagon,the teacherwill ask the students.) Whatpolygonisthis?Whatcan youtell me aboutit? What isthe prefix of pentagon?Whatdoes “pent”means? Continue forhexagon,heptagon,octagon, nonagon, and decagon. (Studentsshouldbe able to identifythe numberof sidesand possiblyanglesforeachpolygon.) That’s goodclass.I knowthat you’ll finditeasy to name of identifythe differenttypesof polygons.Now,cansomebodygive me the answer?What doyou call to a polygonhaving equal sidesandequal angles? D. Analysis You got it!Now,let’shave ashort activity before youtake the quiz. Usinga ruler,draw the followingregular polygonsinside each box. 1. A regular polygonwith 3 sides 2. A regular polygonwith 4 sides 3. A regular polygonwith 6 sides 4. A regular polygonwith 10 sides Quadrilateral A quadrilateral hasfoursides. It has fourangles. “quad”means“four”. (Write these propertiesbelow the shape onthe board.) Pentagon A pentagonhas5 sides. It has five angles. “pent” means“5” (Write these propertiesbelow the shape onthe board.) (The studentswill continue toidentifythe numberof sidesandangle foreach polygon. Theywill alsobe thinking aheadandalready have the prefix forhexagon,heptagon, octagon,nonagon,and decagon.) Regular Polygons 1. A regular polygonwith 3 sides 2. A regular polygonwith 4 sides 3. A regular polygonwith 6 sides 4. A regular polygonwith 10 sides
  4. 4. Teacher’s Activity Pupil’s Activity E. Generalization Now, Class, let’s remember that polygons are closedplane figure made upof three ormore line segments joined at their endpoints and it is named according to the number of its sides. Can youagain tell me the differenttypesof polygons? F. Application Group Activity:“PolygonHunt” Organize students in group of two. Take them as a group as they explore the school for polygons. Let them take a camera. Instruct students to take pictures of polygons they find and record their information on a polygon hunt sheet. Once each pair has found ten polygons, have them print the pictures and present their findings to the class. (The students answer) (Sample of Polygon Hunt sheet) IV. Evaluation The sum of the measures of the angle of the triangle is 180o . Count the number of triangles that can be formed without overlapping in each polygon. Compute for the sum of the measures of the angles of polygon. POLYGON Number of Sides Number of Triangles Sumof The Measure of The Angles 1. 2. 3. 4. 5. 6. V. Assignment On a short bond paper, make an art depicting the different polygons seen in real life. Preparedby: MARIA TERESA A. CABALLERO TeacherI Applicant