Methods and Basic Units of measuring Liquid

Subject : Basic Science and Technology

TopicMEASURING LIQUIDS

Class : Primary 4

Term : First Term

Week : Week 9

Instructional Materials :

  • gallons of water
  • graded water jar
  • Water
  • Paper
  • Card board
  • Empty Jar
  • Pen
  • Whiteboard/Chalkboard
  • Explanatory posters/pictures
  • Explanatory videos

 

Reference Materials

  • Scheme of Work
  • Online Information
  • Textbooks
  • Workbooks
  • 9 Year Basic Education Curriculum

Previous Knowledge :

The pupils have previous knowledge of Measurement Measuring

 

 

Behavioural Objectives :  At the end of the lesson, the pupils should be able to

  • Measure the amount of liquids accurately using graduated measuring cylinders, cups or  jars.
  • State the metric unit of volume
  • Improvise a measuring cylinder with estimated scales for volumes in the metric system.

 

 

Content :

  LESSON CONTENT

   MEASURING LIQUIDS 

Liquid is measured using standard measuring instrument like measuring cylinder and beaker to get it quantity and amount of volume. The basic unit of measuring liquid is LITRE .

Examples of liquid commonly found at home or in schools are

  • Petrol
  • Diesel
  • Water
  • Juice
  • Soft drinks
  • Kerosene
  • Groundnut oil
  • Palm oil

 

 

MEASURING THE VOLUME OF LIQUIDS IN LITRES

Liquids like water, kerosene, petrol, oil can be measured. Graduated jars, measuring cylinder, pipette can be used to measure the volume of liquids. Other liquids like soft rinks already come in containers that are graded and the unit of volume in each container has been written of such container , plastic bottles or bottles .

We have some  soft drinks like pepsi or coke  in various liquid plastic bottles  like the 50 cl  , 60  cl or 100 cl . Ragolis water and some other bottle water come in 50 cl , 75 cl or 150 cl . We have groundnut oil jerry cans that come in 4 litres . When we buy petrol from filling stations , the amount of fuel or diesels that we buy is measured in LITRES .

How much is petrol sold per litre in Nigeria today ?

 

10 milliliters (ml) = 1 centiliter (cl)
10 centiliters = 1 deciliter (dl) = 100 milliliters
10 deciliters = 1 liter (l) = 1,000 milliliters
10 liters = 1 dekaliter (dal)

 

 

Units of Measurement of Liquids:

1000 CUBIC millimetres (MM3) = 1 cubic centimeter (cm3)

1000 cubic centi metres (cm3) = 1 cubic decimeter (dm3)

1000 cubic decimeter (dm3) = 1 cubic metre (m3).

1 cubic metres = 1000 litres.

IMPROVISING A MEASURING CYLINDER

Measuring cylinder can be gotten by making use of the following materials: paper, cardboard, empty jar, ruler and pen

 

 

Presentation

The topic is presented step by step

 

Step 1:

The class teacher revises the previous topics

 

Step 2.

He introduces the new topic

 

Step 3:

The class teacher allows the pupils to give their own examples and he corrects them when the needs arise

 

Evaluation :

  1. State three ways by which Liquids can be measured.
  2. The unit of volume is __________________
  3. Mention three local materials that you can used to make a cylinder.
  4. How many centilitres make one millilitre 
  5. How many centilitres make one litre

 

Conclusion :

 

The class teacher wraps up or conclude the lesson by giving out short note to summarize the topic that he or she has just taught.

The class teacher also goes round to make sure that the notes are well copied or well written by the pupils.

He or she does the necessary corrections when and where  the needs arise.

 

Assignment :

Prepare for the next lesson by reading about Measuring solids
Measuring the volume of solids
Regular solids
Irregular solids

 

 

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