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MATHEMATICS V Date: ___________ I. Objectives: Give the place value of each digit in a 6 or more digit number II. Learning Content Reading and writing numbers through billions in figures and in words References: Materials: BEC PELC 1 A 1 Enfolding Mathematics V Place value chart, number cards

III. Learning Experiences: A. Preparatory Activities: 1. Drill: Writing numbers in expanded form to standard form Strategy: Think and Share (Working back) Mechanics: a. Distribute 2 copies of a number in expanded form to a boy and a girl. b. Let the two write the standard form of the number one on top of the other on the board. c. The purpose of the game is to easily compare the places and digits of the standard form of the number. d. Have volunteers read the first number, give the place value of each digit and the value of each digit. e. Then have them give the place and the value of each digit in the second 'number. f. The game continues until all the five pairs' of numbers are written on the board. 2. Review: Reading smaller group of numbers written on recycled materials. B. Developmental Activities: 1. Motivation: Start playing Guess what number. The teacher places the following statements on the board. a. My telephone number is III II IIII II II IIII III b. I traveled CDLXXIV kilometer by motorcycle. Do you think the sentences are easy to read and understand? Why? 2. Presentation: Strategy : The total student population in the Philippines according to the Philippine Yearbook 1999 is sixteen million, three hundred nine thousand, five hundred fifty-six. Ask the following questions: 1. How is this number written in numerals? 2. In writing a numeral consisting of many digits, how are the digits divided? 3. Where do we start grouping the number by 3? 4. How are the three-digit number group separated from the other number groups? 5. Where do the value of each period as well as each digit in the periods depend?

3.

4.5. 1. 2. 3. 4.

Practice Exercises Write the following numbers in words. 1.2 750 000 2.3 716 513 3.43 000 210 Generalization: How many periods are there in billion? What are the periods in billion? Where do you start reading numbers? Application: Write the value of the underlined digits. 3 100 423 000 9 2 7 657 412 876 010 051 234 145 687 921

IV. Evaluation: Write each number in standard form. 1. 75 billion, 84 million, 26 thousand75 billion, 84 million, 26 thousand 2. 149 million, 400 thousand, twelve 3. 4 billion, 180 thousand 4. Thirty-five million, ten thousand 5. Sixty billion V. Assignment: Write the number words in numerals 1. 436 510 210 2. 2 004 716 3. 14 287 000 4. 8 286 000 450 5. 3 012 428 000

Remarks: ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________

MATHEMATICS V Date: ___________ I. Objectives: Read and write numbers through billions in figures and in words correctly

II. Learning Content:Reading and writing numbers through billions in figures and in words References: Materials: BEC PELC 1 A 1 Enfolding Mathematics V Number cards with number 0-9 written on recycled materials like boxes of milk.

III. Learning Experiences: A. Preparatory Activities: 1. Drill: Writing numbers in expanded form to standard form Strategy: Formatting Numbers (Game) Mechanics: a. One group of 10 boys and 1 group of 10 girls will be given number cards 0-9. b. As the teacher says a number the boys' and the girls' groups will form the said number as fast as they could by standing in front of the class. c. The group that is able to form the correct number first gets the point. d. The game will go on until all the nurr0ers prepared by the teacher have been all dictated. e. The group with the highest points wins. 2. Review: Reading smaller group of numbers written on recycled materials. B. Developmental Activities: 1.Motivation Show and discuss the place value chart. Chalk and board. 2. Presentation: Strategy : Picking Flowers Relay (Game) Materials: Paper flowers clipped on a cartolina tree Mechanics: 1. Divide the class into 2 groups 10 boys and 10 girls. 2. Teacher post a tree on the board with flowers having numbers on them. 3. As the teacher says a number, the first set of participants rush to the board to pick the flowers corresponding to the dictated number. 4. The participant who gets the right flower keep the flower and gets the point for his/her group. 5. The game goes on until all the flowers are picked. The group that has the most flowers wins. 3.Practice Exercises Write the numerals of the following. 1. Three million seven hundred twenty three thousand, one hundred twenty 2. Five hundred thirty five million two hundred forty four 3. Six hundred eighty thousand eight hundred two

4. Eight hundred forty seven million three hundred fifty six thousand four hundred fifteen

4.

Generalization: How is each period separated from each other?

When writing numbers in words, what is placed after each period?a. b. c. 5.Application: Write the following numbers in words. 123 456 200 321 345 245 062 556 IV. Evaluation: Write the value of the underline digit in each number 1. 3 10 423 000 __________________ 2. 9 287 600 __________________ 3. 412 875 010 051 __________________ 4. 17 386 001 000 __________________ 5. 234 126 143 __________________ V. Assignment: In the numeral 927 814 760 537, write each digit in the proper place according to value. ________ a. thousands ________ b. ten millions ________ c. billions ________ d. hundreds ________ e. ones ________ f. ten thousands ________ g. hundred millions ________ i. hundred thousands ________ j. ten billions ________ k. millions ________ l. tens

Remarks: ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________

MATHEMATICS V Date: ___________ I. Objectives: Identify the properties of addition used in an equation II. Learning Content Using the properties of Addition to Help Find the Sum References: Materials: BEC PELC 1 A 2.a Enfolding Mathematics V flashcards

III. Learning Experiences: A. Preparatory Activities: 1. Materials: Set the flashcards with 3-6 digit addends that are complete 1. Teacher prepares flashcards with numbers that are compatible - where properties of addition are easy to use. 2. Teacher divides the class into 3 groups. Teacher shows the class a card and asks the pupils to solve mentally as fast as they can. Teacher may give time limit to answer (i.e. 10-15 seconds depending on how difficult/easy the items are. No other means of computation is allowed except mental computations) 3. Team with the most points wins. 2. Review: How do we read numbers? Where do we start reading numbers? Give examples. Read the following orally. a. 245 132 150 b.256 314 557 B. Developmental Activities: 1. Motivation: Ana picked 9 white roses and 8 red roses. How many roses did she picked? 2. Presentation: a. Teacher posts several cards on the board to be used as example. b. Ask from students ways of finding the sum of a set of numbers quickly. Example: 12 + 7 + 8 c. Teacher probes if such techniques are possible d. Elicit reason why the strategies mentioned by students Commutative, Associative and Identity e. Define and illustrate each. Mention that zero is the identity in addition. 3. Practice Exercises Name the properties used; 1. 4 + (7 + 6) = 4 + (6 + 7) 2. (5 + 3) + 7 = 5 + (3 + 7) 3. (7 + 8) + 2 = 7 (8 + 2) 4. Generalization: What are the properties of addition?

4. (5 + 1) + 2 = 5 + (2 + 1) 5. 3 + 9 = 9 + 3

5. Application: Name the properties used. a. (7+8)+2=7+(8+2) b. 3 + 9 = 9 + 3 c. 14 + 0 = 0 d. 5 x ( 6 + 7 ) = (5 x 7)+(5 x 6) e. 5 x 1 = 5 IV. Evaluation: Find each missing addend. Name the properties you used. 1. (12 + 3 ) + 5 = + ( 3 + 5 ) 4. 35 + 0 + = 35 + 9 + 0 2. 27 + = 27 5. ( 4 + ) + 16 = 4 + ( 16 + 12 ) 3. (32 + ) + 8 = 32 + ( 8 + 7 ) V. Assignment Use the properties to complete each sentence 1.24 + 12 + 6 = 2.65 + 20 + 115 = 3.0 + 574 = 4.0 + 45 + 7 = 5.479 + 0 =

Remarks: ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________

MATHEMATICS V Date: ___________ I. Objectives: Add numbers using properties II. Learning Content Using the properties of Addition to Help Find the Sum References: Materials: BEC PELC A 2.a Enfolding Mathematics V flashcards

III. Learning Experiences: A. Preparatory Activities: 1. Materials: Set the flashcards with 3-6 digit addends that are complete 1. Teacher prepares flashcards with numbers that are compatible - where prope

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