Lesson Plan of Units of Length

Lesson Plan of Units of Length

Subject Mathematics

Grade III

Students` Learning Outcomes

  • Read standard units of length (kilometer, meter and centimeter) using abbreviations.

Information for Teachers

  • The metric system of units was first introduced in the nineteenth century. It is essentially a simple system based on the decimal system. That is why; it allows easy conversion from one unit to another.

Units of Length

  • The metric system of units involves measurements of length, area, mass, capacity and volume; all these units being related through the decimal, system.
  • That is why; it allows easy conversion from one unit to another.
  • The metric system of units involves measurements of length, area, mass, capacity and volume; all these units being related through the decimal system.
  • The basic unit of length is meter.

Units of Length

  • Small lengths are measured in centimeters, whereas the large lengths are measured in meters and kilometers.
  • The letter “m” is used as an abbreviation of meters, “cm” for centimeters, and “km” for kilometers.
  • Make the following charts and display in the classroom.
  • Use these charts to explain the relation between units and subunits of length. Describe abbreviations of units.

Units of Length

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

Material / Resources

Writing board, chalk / marker, duster, worksheets, charts, ruler, meter ruler measuring tape

Introduction

  • Show a small scale/ruler to the students and ask the following questions:
      • Which unit is written on the scale? (point out “cm”)

Units of Length

  • Tell them “cm” stands for centimeter.
  • It is used to measure the length of small objects or the distance between two neighboring points. For example; the length of desk is measured in centimeters.

Units of Length

  • Ask them to keep their finger on the scale and read aloud 1 cm, 2 cm, 3 cm, 4 cm……..etc.
  • Ask one of the students, what is the length of this ruler? (15 cm).
  • Now show them meter ruler and ask, “What is the length of meter ruler?” (100 cm)
  • Tell them 100 cm = 1 m and meter ruler is normally used to measure distance between two pints/places within a small compound.
  • For example, the distance between their school gate and the classroom is measured in meters.

Development

Activity 1

  • Place the ruler, meter rod and measuring tape in front of students

Units of Length

  • Now ask the following questions to students:
      • Which instrument will we use to measure the length of small objects like pen, pencil, chalk or eraser? (Ruler)
      • Which instrument is used to measure the height of a person? (measuring tape/meter rod)
  • Now tell them kilometer is used to measure the distance between two places far away of each other. For example, the distance between Bahawalpur and Multan is measured in kilometers.
  • “Km” stands for kilometers.

Activity 2

  • Display a following chart on the board (To make this chart can use the picture of these things)

Units of Length

  • Ask the following questions:
      • Which units (cm, m and km) are to be used to measure the length of following?
        • The height of horse.
        • The length of a car.
        • The length of an ant.
        • The height of a candle.
        • The distance between school and house.
        • The length of a foot.
        • The length of a bridge.
  • If students tell the wrong answer, describe and explain the units again.

Sum up / Conclusion

  • Sum up the concept by telling them:

Units of Length

      • Centimeters are used to measure the lengthy of small objects.
      • Meters are used to measure the lengthy between two points with in a small compound.
      • Kilometers are used to measure the distance between two places far away of each other.
      • We write “cm” for centimeters, “m” for meters, “km” for kilometers.

Assessment

  • Ask the following questions:
      • Which unit of length will be used to measure the length of pencil?
      • Which unit of length will be used top measure the length of playground?
      • Which unit of length will be used to me4asure the distance between Bahawalpur to Multan?

Follow up

  • Ask the students to collect the following information.
  • Distance between Bahawalpur to Capital of Pakistan.
  • Distance between Bahawalpur to Karachi.
  • Measurement of your height.
  • Ask the students to solve the questions given in their textbook.

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