Lesson 1

Visualizing Numbers up to 5 000

Sir. Rei Marasigan

Alaminos Dist. -Laguna

Drill

Have pupils in the first row write a number between 101 and 1 000 on

their "show-me board."

101

1000

Review

Write numbers in words and in symbols.

Write the following in symbols, e.g.

1)eight hundred forty-eight

2)nine hundred ninety-nine

3)one hundred four

Write the following in words, e.g.

345

503

674

980

864

Motivation

Play a puzzle game. Provide each group of pupils with sets of numerals

0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. The puzzle is a number (ranging from 101 to

1 000) written in bold figures. Ask pupils to answer the questions that you will read.

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Developmental Activities

Presenting the Lesson

Post the puzzles formed on the board.

• How are these numbers similar?
• How many digits are there?
• What is the biggest place value in the numerals?

Performing the Activity

Have the pupils use flats, longs, and squares to illustrate/visualize each

number.

10 flats (10 hundreds) = 1 block (1 thousand)

• Suppose you count on from

1 000, what would be the next

number?

Using blocks, flats, longs and squares, 1 000 has how many loose squares? How many longs? flats? blocks?

How many is 1 000 in hundreds? tens? ones?

1 000 = 10 hundreds

= 100 tens

= 1 000 ones

If we count from one to one thousand and add 1, we have one thousand one.

We are going to visualize other numbers using flats, longs and squares.

Processing the Activity

• What do the blocks represent? the flats? the longs? the squares?
• When we add one square to 1 000 blocks, how much do we get?
• In the representation, how much is 2 blocks, 4 flats, 2 longs, and 5 squares?
• How many blocks, flats, longs, and squares is 3 627?
• Can you now visualize big numbers using this representation?

Reinforcing the Concept

Divide the pupils into 10 groups. Give each group a chart with the title

"My 2 001 – 2 100 Chart”. Have them complete the chart:

2 001 – 2 100, 2 101 – 2 200, and so on.

Summarizing the Lesson

• How could we visualize numbers from

1 001 – 5 000?

• What helps us visualize the numbers?

Applying to New and Other Situations

Gamitin ang sandaanan (flats), sampuan (longs),

at isahan (squares) upang maipakita ang sumusunod na bilang.

1) 1 375

2) 2 083

3) 3 260

4) Isang libo, limang daan, at labing walong

punla ng mahogany

5) Dumalo sa konsiyerto ang apat na libo, dalawang daan, at tatlumpu’t isang manonood. Paano mo maipakikita ang bilang na ito gamit ang sandaanan (flats), sampuan (longs), at isahan (squares). Isulat ang inyong sagot sa sagutang papel.

Evaluation

A. Ipakita ang katumbas na bilang ng mga

sumusunod gamit ang sandaanan (flats), 7

sampuan (longs), at 4 na isahan (squares).

1) 2 217

2) 3 248

3) 3 760

Gamitin ang graphing paper. Iguhit at kulayan ang katumbas na bilang sa ibaba. Isulat ang angkop na bilang sa patlang.

1)1 block, 8 flats, at 2 squares ______________

2) 2 blocks, 5 flats, 7 longs, at 4 squares _____________

3) 4 blocks at 9 longs ____________

Home Activity