# Lesson Planning of Units of Lengths (Km into M)

Lesson Planning of Conversion of Units of Lengths (Km into M)

Subject Mathematics

Students` Learning Outcomes

• Convert Milometers into meters and vice versa.

Information for teachers

• Kilometre and meter are units of measurement and can be written as km and m respectively.

• Kilo means one thousands, therefore kilometre means one thousands meters.
• Kilometre is used to express distance between cities and countries in most of the world except United States and the United Kingdom.
• 1 kilometre = 1000 meters
• Multiply kilometres with 1000 to convert them into meters (Meters = km x 1000)
• Divide meters by 1000 to convert them into kilometres (km = m/1000)

• During this lesson, the teacher should also consult textbook at each level where required.

Material / Resources

Writing board, chalk / marker, duster, measuring tape, meter rod, scale, flash cards, textbook

Introduction

• Tell the students that today we will learn how to convert kilometres and meters into each other.
• Tell them that hundreds of years ago, people used stones, wooden pieces, bones, hands and feet to measure.
• Ask the students have they ever heard about ‘kilometre and meter’?  (Share with class)
• Give some daily life examples related to the topic, as; length of cricket bat is normally equals to a meter.
• Unit ‘kilometre’ is used to measure distance between two cities, as; Lahore is 425 km far from Bahawalpur.
• While buying cloth for you, your parents normally use word “meter” e.g. 6 meters cloth.

Development

 Activity 1 Write on the board: 1 kilometre = 1000 meters. Which unit is greater? Kilometre or meter (Expected answer would be as; kilometre) We will convert greater unit to smaller and smaller unit to greater, as; Conversion from Kilometres to meters: Distance between Lahore to Bahawalpur is 425 km. We can find this distance in meters too. kilometres can be easily converted into meters simply by multiplication, as; 1 km = 1000 m. Distance between both cities = 425 km  m = km x 1000 Distance between both cities in meters = 425 km x 100 = 42500m Conversion from meters into kilometres: Now give another example to the students about conversion of meters into kilometres. Difference between Lahore and Multan is 250000 m. Convert this distance in to kilometres? It is quite easy by dividing meters with 1000. (km = m/100) Distance between both cities = 25000 m Distance between both cities in kilometres = 25000/1000 km = 250 km

 Activity 2 Write more examples on the board to further strengthen the students` concepts. Explain to students that while converting kilometres of decimal numbers into meters simply move decimal point three places right, as; 5.7 km = 5700.0 or 5700 m 5.72 km = 5720.0 or 5720 m 15.72 km = 15720.0 or 15720 m Explain further to the students that while converting meters of decimal numbers into kilometres simply move decimal point three places left, as; 2.3 m = 0.0023 km 2.36 m = 0.00236 km 22.36 m = 0.02236 km

Sum up / Conclusion

• Finish the lecture by revising the key points of today`s lecture so students can recall what they have learnt.
• Tell them as; 1 km = 1000 m
• Kilometres can be converted into meters by multiplying with 1000, as m = km x 1000.
• Meters can be converted in kilometres by dividing with 1000, as; km = m/1000.
• In decimal numbers to convert meters into kilometres move the decimal point 3 places left., as 2.5 m = 0.0025 km.
• In decimal numbers to convert kilometres into meters move the decimal point 3 places to the right, as; 3.7 km = 3700.0 m or 3700 m

Assessment

• Spread four flash cards having kilometres written on them on the table.
• Call four students one by one and ask them to pick the flash cards.
• All the four students will turn wise show their cards to the whole class.
• Spread four more flash cards on the table having written meters on them related to the kilometres on previous cards.
• Ask them as you have already learned about conversion of units of measurement, so pick the relevant card of meters.
• Encourage the students for correct answer.
• Solve the following.