Basic Science and Technology
First Term / 1st Term
Basic 3 / Year 3 / Primary 3
Previous lesson :
The pupils have previous knowledge of linear or length measurement in their previous lesson
Topic: Measurement of Weight of Objects
Subtitle: Mass Measurement
Behavioural objectives :
At the end of the lesson, the pupils should be able to
- Explain the meaning of mass
- Explain the meaning of mass measurement
- Mention the tools that are use in measuring the mass of objects
Instructional Materials :
- Wall charts
- Related Online Video
- Flash Cards
- Bathroom Scale
- Scale measure
- Spring Scale measure or spring balance
Methods of Teaching :
- Class Discussion
- Group Discussion
- Asking Questions
- Role Modelling
- Role Delegation
Reference Materials :
- Scheme of Work
- Online Information
- 9 Year Basic Education Curriculum
Mass refers to how heavy an object is . Mass measurement is use to calculate or measure the heaviness or weight of objects . The objects that are used to measure weight or mass are spring balance , scale , etc.
The basic unit of measuring mass is Gram. Other units or measuring weight are
10 milligram make 1 centigram
10 centigram make 1 decigram
10 decigram make 1 gram
1000 grams make 1 kilograms\
We can measure the weight of our bag
We can measure the weight of our body .
We can measure the weight of our books
What is the weight of a bag of rice ?
What is the weight of a bag of cement ?
Please note that
200 centigram = 2 grams (2 x 100 )
1000 grams = 1 kilogram
4000 grams = 4 kilograms
The topic is presented step by step
The class teacher revises the previous topics
He introduces the new topic
The class teacher allows the pupils to give their own examples and he corrects them when the needs arise
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.
1. Measure your weight and record it somewhere .
2. Mention three instrument for measuring mass or weight
3. convert 500 centigrams to grams
4. What is the weight of your bag
5. Convert 2 kilogram to grams
6. Change 300 decigrams to kilograms
Prepare for the next lesson by reading about mass or weight measurement