MATHEMATICS VTHIRD QUARTER

I. OBJECTIVESAt the end of the lesson, students will be able to:a. Find the percentage in a given problem.

II. SUBJECT MATTERA. TOPIC: Finding the PercentageB. REFERENCE: Proded Math. 37 A pp. 2-8

Math World 5 p. 499C. MATERIALS: Chalks, Media for Microsoft PowerPoint, Projector, Paper, Coins, Marbles, Matches,

Rubber Bands

III. PROCEDUREPreparatory ActivitiesA. DRILL: Flash Cards

Direction: Change the following percent into its decimal form.20% 9% 78% 43%3% 99% 1% 100%

B. REVIEWDirection: Identify the Base, Percentage and Rate in a problem.1. Dina wanted to buy a Volleyball. She went to the store and saw that it is on sale. Its original price

is 920 Php at a 15% discount and so she saved 138 Php.2. Jim got 68 points in a Math quiz of an 80 item test. His score is 85% of the total number of the

quiz.3. The Basketball team won 64% of its games. The got 32 wins out of 50 games.4. 50% of the cats in the pet shop was sold last month. Out of 150 cats, only 75 is left.5. 85% of the apples were given to the orphans by the sponsors. 170 apples were distributed and the

remaining of the 200 apples were eaten by the teachers and staff.

Developmental ActivitiesC. MOTIVATION

Show pictures of things that originated from trees.Fruits (e.g apple, orange)Paper and booksFurnitureHouses and establishments

D. PRESENTATIONNicko and Nicka are mango trees. They live in the wild where all the trees live in peace. They

live happily and contented as they hear the birds sing their favorite music and watch wild animals play all day. One morning, people came with their chainsaws. Using the machines that they have in their hand, one by one, Nicko and Nicka’s family was cut down. Their trunks and branches were placed in the truck leaving their leaves and twigs on the ground. Dead. Nicko and Nicka survived as they lost 90% of their family members of 250. How many trees were cut down by the loggers?

E. DISCUSSIONComprehension Check:

Who are the main characters of the story?Where do they live?What happened to them as people came to their habitat?Are trees important? Why?

What is asked in the problem?What are the numbers given in the problem?Is the number the Rate? Base? Percentage?Which among the three is missing in the selection?What is the number sentence to be used in the selection?

How can we find the percentage in the problem with the Rate and the Base provided?- We change the rate into its decimal point and multiply it with the base.

A varsity player is given a monthly allowance of 1,500 Php. If 15% of this amount is put into his trust fund, how much is transferred to his trust fund every month?*picture here as shown in the slideshow presentation*

Multiply the base (1,500) to .15 and the answer is 225 Php.

F. ActivitiesA. Find the percentage in the problem.

1. There are 196 countries in the world today. 25% of the countries are found in Asia, being the largest continent in the World. How many countries does Asia have?

2. There are almost 3,000 species of snakes and approximately 13% of it are found venomous. How many snakes are said to be venomous?

3. Soft drinks and sodas give people 20% more of their daily intake of calories. If humans should consume 3000 calories a day, how many more calories are added to our body when we drink a can of soda?

4. Donna saves 25% of her daily allowance. If her daily allowance is 120 Php, how much does she save every day?

5. Marcus likes to play computer games. One day, he won 80% of his 15 games. How many games does he won?

B. Group ActivityThe class is grouped into 5. Each group will be given an envelope with different items inside.

The group then should think of a problem wherein the item they got can be used. They will perform the problem in front (e.g. through role playing, through song, poem, etc) and ask the other groups to answer the problem that they made.

Items: PaperCoinsMarblesMatchesRubber Bands

C. Find the percentage in the problem.1. In a math contest, there are 21 contestants. If 75% of them are girls, how many among them

are girls?2. Shiela wanted to buy the dress that costs 450 Php but he doesn’t have enough money to buy

it. The next day, the shop went on sale and every item can be bought with 45% discount. How much can Shiela save if she buy the dress with 45% discount?

3. Roy got the highest score in 50% of their class’ summative test this quarter. If they had 9 test this quarter, how many test did Roy got the highest score?

4. A grade 5 class has 50 students. If 40% of the class registered to a basketball clinic, how many members of the class will attend the clinic?

5. Peter's mother has a take home pay of 1,863 Php a month .If 20% of this is spent for rent, how much is the amount for rent?

IV. EVALUATIONA. Direction: Express the following ratios in lowest term.

1. Our Solar System has 8 major planets and 50% of these planets are made in gas. How many planets are made in gas?

2. In a class of 40 pupils 15% of them are members of the Mathematics club. How many are members of the Mathematics club?

3. Mona planned to save 12% of her weekly allowance of P50.00. How much did she plan to save?4. A varsity player is given a monthly allowance of 1,500 Php. If 15% of this amount is put into his

trust fund, how much is transferred to his trust fund every month?5. Value Added Tax (VAT) adds 12% to everything that we purchase or buy in any store here in the

Philippines. How much is the VAT if I bought a book that costs 223 Php?

V. ASSIGNMENT

Look for any receipt that you can find in your home. Compute the Value Added Tax of the total amount of your purchase. Show your solution on your notebook and paste the receipt beside it.