Math for Lifelong Learning Grade 5
Chapter 1: Understanding Whole Numbers
Lesson 1: The Place Value and Rounding Off Whole Numbers
Motivation
- Let the pupils imagine a stack of ₱100 notes that is twice their heights. Ask the pupils what they think the value of all the bills would be.
- Encourage the pupils to use their imagination and creativity in estimating how much a stack of ₱100 notes would yield in total.
- Let the pupils recall place value and how to round off whole numbers.
Discussion
1. Let the pupils look at the numbers in a place value chart on page 5 of the worktext. Ask them to observe the placement of the digits of each number in the chart, as well as the place values of these digits. Let the pupils recall the concept of place value and how to write the standard and expanded forms of whole numbers up to the millions using the number chart.
2. Ask the pupils the following questions:
4. Let the pupils answer the exercises under On the Road to Learning on pages 7 and 8 of the worktext to validate their learning.
5. Teach the pupils how to round off whole numbers when the numbers to be rounded are up to millions. Present them with a situation that requires them to use their skill in rounding off numbers to engage them in the lesson. Ask the pupils the following questions:
7. Ask the pupils the following questions:
2. Ask the pupils the following questions:
- What can you say about the value of a digit as it goes from ones place value to millions?
- How do you write the standard form of whole numbers?
- How do you write the expanded form of whole numbers?
- Why is it important to know the place value of a digit when you read the entire number?
4. Let the pupils answer the exercises under On the Road to Learning on pages 7 and 8 of the worktext to validate their learning.
5. Teach the pupils how to round off whole numbers when the numbers to be rounded are up to millions. Present them with a situation that requires them to use their skill in rounding off numbers to engage them in the lesson. Ask the pupils the following questions:
- Why is it important to know how to round off numbers?
- How do you round off whole numbers?
7. Ask the pupils the following questions:
- How will you know when to add 1 to the digit in the rounding place or to just retain the digit in the rounding place?
- What happens to the digits to the right of the rounding place after rounding it off?
- What difficulties have you encountered in the lesson?
- How did you overcome those difficulties?
Culmination and Synthesis
1. Let the pupils form a group of four members each to perform the activity "One-Year Budget at Home" under Living with Math on pages 10 and 11 of the worktext.
2. Let the pupils generalize what they have learned in the lesson using the 3-2-1 chart below.
2. Let the pupils generalize what they have learned in the lesson using the 3-2-1 chart below.
The 3-2-1 Chart |
|
---|---|
3 Things I Learned in the Lesson |
1. 2. 3. |
2 Interesting Facts |
1. 2. |
1 Question that I still have |
3. Let the pupils answer the questions under Understanding How I Learned on page 13 of the worktext to further validate their learning.
4. Ask for volunteers to write the important words they have learned in the lesson on the board. Then have the pupils write these important words in the blanks under Creating My Math Word Corner on page 87 of the worktext.
4. Ask for volunteers to write the important words they have learned in the lesson on the board. Then have the pupils write these important words in the blanks under Creating My Math Word Corner on page 87 of the worktext.
Assessment
1. Let the pupils answer the items under Accomplishing the Standard on pages 12 and 13 of the worktext to assess how much they learned the lesson.
2. Let the pupils answer the items under Extending Beyond the Standard on page 13 of the worktext.
2. Let the pupils answer the items under Extending Beyond the Standard on page 13 of the worktext.