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- 1. I. OBJECTIVES At the end of the session, the students should be able to: 1. investigate perfect squares and square roots using manipulative; and 2. square numbers and find the square root of perfect squares II. SUBJECT MATTER Topic: SQUARE ROOTS OF RATIONAL NUMBER Reference: e-MATH by Oronce and Mendoza pp. 61-65 Materials: meta cards, geoboard, activity sheets, LCD projector Time: 40 minutes Strategies: Guided Discovery Learning, Exposition III. LEARNING EPISODES Priming Review Drills in finding the square of a number Music and Learning is Fun As the music plays the teacher will pass the ball to a student seated at the front row. This student will then pass it to his classmate beside him who will do the same. When the music stops the student with the ball will answer the question. Motivation: 4 Pics in 1 word A. ACTIVITY . In Search of Perfect Squares OBJECTIVE: Use geoboard and rubber bands to model a square MATERIALS: geoboard, rubber band PROCEDURE: Use geoboards to visualize the geometric meanings of square and square root. Explore the relationships between the area of a square and its side length. The square root of a number can be represented as the side length of a square whose area is given. Complete the table below.
- 2. B. ANALYSIS 1. What makes these figures “square”? 2. What is the length of each square? 3. What is the perimeter of each square? 4. What is the area of each square? Do you have to count all the little squares to find out? How can you find the area of the square if you know the length of one side? 5. Why 25 and 64 are called “perfect squares”? Which column above shows perfect squares? 6. If you know the side length of a square, how can you find its area without a geoboard? 7. If you know the area of a square, how could you find the side length without a geoboard? 8. What is the relationship between the side length of a square and the square root of its area? C. ABSTRACTION What is a perfect square? What is a square root? A perfect square is the square of a whole number. The square root of a number is the length of the side of a square with an area equal to the number. D. APPLICATION Music and Learning is Fun As the music plays the teacher will pass the ball to a student seated at the front row. This student will then pass it to his classmate beside him who will do the same. When the music stops the student with the ball will answer the question. IV. EVALUATION Find the square root of the following. 1. 16 Side Length Area Perimeter 5 units 4 units 49 units2 12 units x unit
- 3. 2. 400 3. 36 4. 196 5. 225 V. ASSIGNMENT 1. Write a journal using the guide questions below. Write 8 to 10 sentences and start with… I learned that… Guide Questions • Explain the relationship between the side length of a square and the square root of its area. Give examples. • What part of the lesson do you find challenging and why? • How will you relate the lesson in your daily life? • What part of the lesson did you find useful and why? The students will be provided of a scoring guide in doing their journal. Scoring Guide for Journal Writing Points Description 5 Writes a clearly stated main idea, topic and presents supporting details in a logical order. The journal is written with correct use of conventions(grammar, punctuation, capitalization, and spelling) 4 Writes clearly stated main idea, topic and presents supporting details in a logical order. The details may not be as complete as it could be. The journal is written with generally correct use of conventions. 3 Writes clearly stated main idea, topic but presents some unrelated details. There are few errors in the use of conventions. 2 Writes a main idea, topic, but not clearly stated. Details may not be presented in a logical order, or some of the information may not be accurate. The journal may include some errors in the use of conventions. 1 No accurate understanding of topic/subject.

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