# Lesson Plan in Math

Topics: Circle, Line segment, Radius Pages: 3 (877 words) Published: January 14, 2011
Parts of a Circle I. Learning Objectives Cognitive: Psychomotor: Affective: Identify the parts of a circle Draw a circle and show its parts Show cooperation in group activities

II. Learning Content Skills: References: Materials: Value: 1. Identifying the parts of a circle 2. Drawing a circle and showing its parts BEC-PELC III.A.1.2 textbooks in Math 4 cutouts of circles, drawing of circles, colored chalk Cooperation

III. Learning Experiences A. Preparatory Activities 1. Drill Crazy Quilt (number games)

a. Two players use one game board. The players share four crayons (any 4 colors). b. The first player picks a problem in the wheel and solves it. If the player solves the problem correctly, he or she colors in that block on the wheel. If the player calls out a wrong answer, he or she loses a turn to color and so on. c. The player who has the most colored parts wins.

2. Review Below is a picture of a house. Identify the square, the rectangle, the trapezoid and the parallelogram by naming the parts of the house.

3. Motivation a. Present drawings of circles of different sizes. b. Ask pupils to describe the circles they see. Have them give the characteristics of a circle. B. Developmental Activities 1. Presentation a. Present the lesson through a group activity. - What should you do if you are in a group? - Why do you think you should cooperate with one another? Group 1: Activity 1) 2) 3) 4) 5) Give the pupils cut outs of circles Ask the pupils to fold the circle into 2 equal parts. Ask the pupils to mark the center of the circle with an X. Then mark the fold A and B at both ends. Introduce the term diameter for this line segment. Guide them in giving the definition of a diameter. 6) This time, fold the circle into 4 equal parts. Mark the fold A, B, C and D. 7) Then introduce the term radius. Let them define the radius. 8) Ask the pupils to compare line segments XA, XB, XC and XD 9) What do you call the line that surrounds the circle? 10) Introduce the...