Similar and Dissimilar Fractions in a given Set of Fractions I

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Similar and Dissimilar Fractions in a given Set of Fractions I Powered By Docstoc
					Similar and Dissimilar Fractions in a given Set of Fractions

I. Learning Objectives

   Cognitive:           Identify similar and dissimilar fractions from a given set of fractions
   Psychomotor:         Illustrate similar and dissimilar fractions through diagrams
   Affective:           Work cooperatively in group activities

II. Learning Content

   Skills:              1. Identifying similar and dissimilar fractions
                        2. Visualizing similar and dissimilar fractions
   References:          BEC-PELC II.C.1.2
                        textbooks in Math 4
   Materials:           diagrams
   Value:               Cooperation

III. Learning Experiences

   A. Preparatory Activities

      1. Drill

             Conduct a drill on reading and writing fractions and mixed numbers.
             a. Have them read the following: 2/5, 1/6, 4/8, 41/2, 23/7
             b. Write the following: one-third, eight-fifths, five-halves

      2. Review

             Identify and write whether each of the following is a proper fraction, improper fraction or a
             mixed number.




      3. Motivation

             Daisy was asked to draw these different shapes on the black board.




             How many shapes did Daisy draw?
             What are the shapes that Daisy drew?

   B. Developmental Activities

      1. Presentation
  (Note: Give the importance of cooperation while doing the group activity)

  a. Method 1
     1) Ask the pupils the number of circles, triangles and squares which Daisy drew.
     2) Let them write a fraction to tell what part of the whole set are circles, triangles and
        squares. (3/9 circles, 2/9 triangles, 4/9 squares)
     3) Ask the pupils what they have observed with the denominators. What do these
        fractions have in common? (They have the same denominators.)
        What kind of fractions are these? (similar fractions)

  b. Method 2
     1) Let them focus on the shaded shapes which Daisy drew.
        What part of the circles are shaded? 2/3
        What part of the triangles are shaded? 1/2
        What part of the squares are shaded? 3/4
     2) Ask the pupils what they have observed with the denominators.
        What do you notice about the denominators?
        (they have different denominators)
        What do we call these fractions? (dissimilar fractions)
     3) Discuss the difference between similar and dissimilar fractions and give examples.

2. Guided Practice

  a. Tell which sets of fractions contain similar fractions and dissimilar fractions. Write S for
     similar and D for dissimilar fractions on the blanks before each number.




  b. Encircle the similar fractions and box the dissimilar fractions in each set.




  c. Look for patterns. Fill in the blanks. Then write S if the set is a set of similar fractions and
     D if the set is a set of dissimilar fractions.
      3. Generalization

          What are similar fractions? What are dissimilar fractions?

               Similar fractions are fractions with the same denominators.
               Dissimilar fractions are fractions with different denominators.

   C. Application

      Read and answer on your paper.
            Alice spent 2/3 of an hour cleaning the yard and burning the dried leaves of trees. Write 2
        other fractions that are similar to 2/3

IV. Evaluation

   A. Put a check mark on the blank if the set of fractions are similar fractions. Put a cross if the set of
      fractions are dissimilar fractions.




   B. Box the similar fractions and draw a triangle to enclose the dissimilar fractions in each set of
      fractions.




   C. Illustrate the following through diagrams. Then identify whether they are similar fractions or
      dissimilar fractions.




V. Assignment

   A. Select from the following groups of fractions the sets of similar fractions. Encircle the letter of
      the correct answer.
B. Choose from the groups of fractions below the sets of dissimilar fractions.

				
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posted:8/31/2011
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