2290 Words10 Pages

I. OBJECTIVES
At the end of a 45-minute period, the grade four pupils will be able to:
1. Add and subtract fractions with the same denominators,
2. Add and subtract fractions with dissimilar denominators,
3. Add and subtract mixed numbers with similar denominators, and
4. Add and subtract mixed numbers with dissimilar denominators with 75% proficiency level.
II. SUBJECT MATTER
ADDING AND SUBTRACTING OF FRACTIONS
A. References
Liking Mathematics in the Grade School: Textbook in Mathematics for Grade-Four by Prepotente et.al.
21st Century Mathematics (6) by Villame et.al.
B. Materials
Power point presentation, visual aids
C. Ideas
To*…show more content…*

To add fractions with similar denominators,we simply add the numerators and write the sum over the same denominator. Dulce ate ⅖ of the cake in the morning and ⅕ in the afternoon. How much cake was eaten by her? What is asked in the problem? STUDENT: The amount of cake eaten by Dulce, teacher. TEACHER: What are given? STUDENT: 2/5 cake in the morning and 1/5 in the afternoon. TEACHER: So we are going to add the given fractions to answer what is asked in the problem. As what is stated in the rule, we simply add the numerators and write the sum over the same denominator in adding of similar fractions. So we simply add 2 and 1 which is equal to 3 and write it over the same denominator which is 5. And the answer is 3/5. TEACHER: Did you get it? STUDENT: Yes,teacher. TEACHER: So let’s proceed.To subtract fractions with similar denominators, we simply subtract the numerators and write the difference over the same denominator. This is somewhat similar as in adding of fractions with similar denominators. The only difference is we are going to subtract the numerators instead of adding. A water tank was ⅞ full of water. After a day of use, it was ⅜ full. How much water was used during the day? What is asked? STUDENT: The amount of water that was

To add fractions with similar denominators,we simply add the numerators and write the sum over the same denominator. Dulce ate ⅖ of the cake in the morning and ⅕ in the afternoon. How much cake was eaten by her? What is asked in the problem? STUDENT: The amount of cake eaten by Dulce, teacher. TEACHER: What are given? STUDENT: 2/5 cake in the morning and 1/5 in the afternoon. TEACHER: So we are going to add the given fractions to answer what is asked in the problem. As what is stated in the rule, we simply add the numerators and write the sum over the same denominator in adding of similar fractions. So we simply add 2 and 1 which is equal to 3 and write it over the same denominator which is 5. And the answer is 3/5. TEACHER: Did you get it? STUDENT: Yes,teacher. TEACHER: So let’s proceed.To subtract fractions with similar denominators, we simply subtract the numerators and write the difference over the same denominator. This is somewhat similar as in adding of fractions with similar denominators. The only difference is we are going to subtract the numerators instead of adding. A water tank was ⅞ full of water. After a day of use, it was ⅜ full. How much water was used during the day? What is asked? STUDENT: The amount of water that was

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