1. LESSON PLAN
Subject : Mathematics
Year : 3
Topic : Mass
Duration/Time : 60 minutes
Subject Content : Kilogram is a standard unit used to weigh heavy objects, and
gram is a standard unit used to weigh light objects.
Learning Outcomes : At the end of the lesson the pupils will be able to:
1. Read scales to the nearest division.
2. Measure and record masses of objects using the standard
units.
Moral Values : Being Cooperative and helpful
Thinking Skills : Comparing and reasoning.
Teaching Aids : Books, Salt, Sugar, Apple, Marbles, weighing instrument,
chalks.
Step/Time Skill/Content Teaching and Learning Activities Remark/Resources
Set induction To arouse 1. Teacher shows slides of various types of Power Point
( 5 minutes ) interest weighing instruments. Slide 2 to slide 5
2. Teacher talks about the weighing instruments
used from the olden days till modern times.
Step 1 To introduce 1. Teacher introduces the concept of weight by Equal arm balance,
(10 minutes) the concept of comparing two objects; marble and chalk. Marble, Chalk
weight 2. Students try to guess which object is heavier.
3. Teacher puts the two objects onto the equal arm
balance.
4. Students now can see which is heavier and
make this conclusion:
“The marble is heavier than a piece of chalk.”

2. Step 2 To introduce 1. Teacher introduces the symbols for kilograms Power Point
(10 minutes) the symbol and grams. Slide 6 to slide 9
“kg” and “g” 2. Teacher guides students to read the weighing Worksheet 1 or
and to read scales to the nearest division. power point slide 10
scales to the 3. Teacher distributes worksheets and students to slide 13
nearest write down the masses of the objects.
division 4. Teacher checks answers with the students.
Step 3 To measure 1. Teacher divides class into 3 groups. Weighing scale
(15 minutes) masses of 2. The group leader will collect all the objects and Salt, Sugar, Apple,
objects and to weighing scale. Book, Marbles
record them in 3. Students measure the mass of the various
kilograms and objects and record them in the table provided.
grams
Items Mass
Salt
Sugar
Apple
Book
5 marbles
4. Teacher goes around checking that the students
are weighing and reading the scales correctly.
Closure Game – 1. Students remain in the same group for the Picture cards.
(5 minutes) “Show The game. Cut-out face of scales
Mass.” 2. Teacher distributes picture cards and the face of
the weighing scales.
3. Students take turns to read the mass of the
objects and turn the pointer to show the correct
mass.