Measurement of mass

WEEK 2

Topic: Measurement of mass

Subtitle: Mass

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

1. Define mass
2. State two instruments for measuring mass
3. State the unit of mass

Instructional material: Kitchen Scale, weighing balance and beam balance

CONTENT

Mass is the amount of weight a body contains. We can use the following to know the mass of an object; beam balance, kitchen scale, spring balance and bathroom scale.

Beam balance                    Kitchen scale

We know the main standard unit of mass or weight is kilogram which we write in short as ‘kg’. The 1000th part of this kilogram is gram which is written in short as ‘g’. Thus 1000 gram = 1kilogram and 1 kilogram = 1000 gram

Below is a picture of objects of different weights, 500g and 1kg.

Strategies& Activities:

Step 1: The teacher revises the previous topic.

Step 2: The teacher introduces the new topic.

Step 3: The teacher explains the new topic.

Step 4: Teacher welcomes pupils’ questions.

Step 5: The teacher evaluates the pupils.

Assessment & Evaluation:

1. What is mass?

2. mention two instruments you can use to measure mass.

CONCLUSION

A teacher goes over the topic once again for better understanding.

Assignment:

1. Convert 9kg to grams

2. write three instruments we can use to measure mass