Lesson Plan of Subtract Units of Time

Students` Learning Outcomes

• Subtract units of time in hours.
• Solve real life problems involving subtraction of units of time in hours.

Information for Teachers

• Units of time are used to measure the duration between the occurrences of two events.

• The smallest unit of time is second.
• The other units of time are minute, hour, day, week, month, and year.

Time unit hour can be subtracted from hours.

• While teaching the lesson, also consult textbook where and when applicable.

Material / Resources

Writing board, chalk/marker, duster, pointer/stick, textbook

Introduction

• Ask students:
• How many hours are in one day?
• If you spend 6 hours each day in school then how many hours do you spend on other activities?
• Explain the subtraction procedure on the board.

Development

Activity 1

• Write the following statements on the board and then ask questions.
• Maroon and his wife reached Islam Abad from Lahore in 8 hours by train and taxi. They travelled two hours by taxi. How long did they travel by train?

• Zara finished her homework in three hours. She completed Math`s work in one hour. How much time could she spare for rest of the homework?

Activity 2

• Ask students to find the difference between the following pairs of time:

Sum up / Conclusion

• Among hours, minutes and seconds, hour is the biggest unit of time. Hours can be subtracted from hours through simple mathematical subtraction process.

Assessment

• Akram slept only 4 hours yesterday night. How much time he remained busy during the whole day?

Follow up

• Nadia covered a distance in 3 hours. Ahmad covers the same distance in 2 hours. How much more time Nadia took to cover the same distance than Ahmad?
• Ask the students to solve the questions given in the textbook.