This lesson plan aims to teach students how to add and subtract dissimilar fractions. The lesson begins with a drill identifying similar and dissimilar fractions. Students will then review adding and subtracting similar fractions. To motivate students, a math video will be played. Next, the teacher will present and discuss how to add and subtract dissimilar fractions through worked examples and a word problem. Students will then practice adding and subtracting dissimilar fractions independently and solve word problems involving dissimilar fractions. Finally, students will be evaluated through additional fraction addition and subtraction questions, as well as word problems, and complete an agreement activity in their math workbook.

1. Demonstration Lesson Plan in Math IV
I. Objectives:
A. Perform operation of addition or subtraction of dissimilar fractions.
B. Analyzes and solve word problem involving addition or subtraction of dissimilar
fractions.
C. Work cooperatively with the group and class activities.
II. Adding and or Subtracting Dissimilar Fractions
• Mathematics IV LM pp. 127 - 129
• Teachers Guide pp. 157 - 159
• K to 12 CG M4NS-IIg-83
• laptop, LCD projector, flash cards, cartolina
III. Activities
A. Preparatory Activities
1. Drill
Identify similar or dissimilar fractions.
• 3/4 2/3 1/5
• 1/2 2/6 2/3
• 3/7 4/7 5/7
• 5/9 1/9 2/9
• 1/10 6/10 8/10
2. Review
Adds or Subtracts similar fractions.
• 2/5 + 3/5 =
• 2/6 + 1/6 =
• 7/8 - 2/8 =
• 9/10 - 4/10 =
• 10/12 - 6/12 =
B. Developmental Activities
1. Motivation
Song : Math Dali (downloaded video)
2. Presentation
Ask: Can we add or subtract dissimilar fractions? How can we add or subtract
dissimilar fractions?
3. Discussion
Let the pupils watch downloaded video of math dali episode – Adding or Subtracting
Dissimilar Fractions.
4. Activity
Perform the indicated operation.
• 2/3 + 3/5 =
• 2/6 + 1/3 =
• 7/8 - 2/4 =
• 9/10 - 4/5 =
• 10/12 - 3/6 =
5. Generalization
How can we add or subtract dissimilar fractions?
6. Application
Read, analyze then solve.
1. Marie shared 1/4 slice of a cake to her friend. Her sister shared 3/8 slice of a cake
with her friends. How many slices of cakes did they share altogether?
2. Lando cut a bamboo stick which was 5/6 metre long. He used ¾ metre for a garden
peg. How many metre of bamboo stick was left?

2. IV. Evaluation
A. Solve for N.
1. 3/4 + 1/3 = N 2. 4/5 - 2/3 = N
B. Read, analyze then solve.
3. Tootsie spent 3/10 of an hour sweeping the yard and 2/5 of an hour watering the plants.
How long did she work?
4. Aling Mila cooked 8/10 kilogram of spaghetti. She gave 2/5 kilogram to her neighbors.
How much spaghetti was left for her children?
V. Agreement
Do Get Moving on Math LM pp. 129 - 130.
Wilson S. Parayaoan
Teacher III