# Lesson Planning of Ascending & Descending Order

Lesson Planning of Ascending & Descending Order

Subject Mathematics

Students` Learning Outcomes

§  Arrange numbers up to 999, written in mixed form, in increasing or decreasing orders.

§  Identify numbers given in ascending or descending orders.

Information for Teachers

§  Ascending order means the arrangement of numbers from smallest to greatest.

§  Descending order means the arrangement of numbers from greatest to smallest.

§  With the help of the concept of comparison we arrange numbers in ascending or descending orders.

Material / Resources

Writing board, chalk / marker, duster, textbook

Introduction

• Tell the students, that sometimes backward counting is very useful for the identification of numbers.
• Specifically when we are moving towards a destination ascending order and descending order are very important.

• Tell them that in descending order we move from greatest number to smallest number and in ascending order ewe move from smallest numbers to greatest numbers.
• Tell them that we can use the word moving forward instead of ascending order and moving backward instead of descending order.

For example;

1, 2, 3, 4, 5, 6, 7, 8, 9, 10

This arrangement is ascending order.

10, 9, 8, 7, 6, 5, 4, 3, 2, 1

This arrangement is descending order.

Development

Activity 1

• Draw square boxes on the floor of classroom with the help of chalk and write numbers 91-100 in them.

• Ask one student to stand in the box having number 91 and moves forward to the box having number 100.
• Call another student and ask him to stand in the box with number 100 and move backward to 91.
• Ask the students where he was and where he has reached now?
• Now explain the students that moving from 91 to 100 is ascending order.
• Whereas, moving from 100 – 91 descending order.
• Write on the board.

Activity 2

• Write the following numbers on the board.

426, 425, 429, 427, 428

• Tell the students that we are going to arrange these numbers in ascending order.
• In ascending we arrange numbers from smallest to greatest.

• Ask students to start writing numbers from downward direction to the upward directions. I.e.

• Write the following numbers on the board.

• Demonstrate the students that arrangement of numbers from greatest to smallest is called descending order.

• Explain the students that moving backward it is known as descending order.

Activity 3

• Draw the following on the board.

• Ask the students to arrange the numbers in ascending in order in their notebooks.
• Observe their work and guide them.

• Ask the students to arrange the numbers in descending order.

Sum up / Conclusion

• Arrange from smallest to greatest numbers is called ascending order. For example counting from 1 to 10 (1, 2, 3….10)
• Counting from greatest to smallest numbers is known as descending order for example counting from 10 to 1 (10, 9, 8….1)

Assessment

• Write the missing numbers in the following ascending order.

110, 111 __,__114 ____, 116, ____,118, ____, 120

• Arrange the following numbers in descending order.