Basic Science Primary 3 First Term Lesson Notes Week 4
Subject: Basic Science
Class: Primary 3
Term: First Term
Week: 4
Age: 8 years
Topic: Measurement of Time
Sub-topic: Meaning and Instruments of Measuring Time, Standard Metric Units of Time, Specified Activities Within Specified Time Frame
Duration: 40 minutes
Behavioural Objectives
By the end of the lesson, pupils should be able to:
- Mention the methods of obtaining time from their past experiences.
- Explain the meaning of time.
- Mention instruments for measuring time.
- Identify the units of measuring time (seconds, minutes, hours, days, weeks, months, and years).
- Discuss how specified tasks are performed within specified time frames.
Keywords
- Time
- Clock
- Stopwatch
- Second
- Minute
- Hour
- Day
Set Induction
The teacher will show a clock and a stopwatch and ask the pupils what they think these tools are used for.
Entry Behaviour
Pupils have seen clocks and other time-measuring tools in their everyday lives.
Learning Resources and Materials
Building Background/Connection to Prior Knowledge
Discuss instances where pupils have observed or used time to perform activities at home or in school.
Embedded Core Skills
- Measurement
- Time Management
- Observation
Reference Books
- Lagos State Scheme of Work
- Basic Science Textbook for Primary 3
Instructional Materials
Content
1. Meaning of Time
- Time is the ongoing sequence of events taking place.
2. Instruments for Measuring Time
- Clock: Used for measuring hours and minutes.
- Stopwatch: Used for measuring short periods of time.
- Calendar: Used for measuring days, weeks, months, and years.
3. Standard Metric Units of Time
- Second (s): The smallest unit of time.
- Minute (min): 60 seconds make 1 minute.
- Hour (hr): 60 minutes make 1 hour.
- Day: 24 hours make 1 day.
- Week: 7 days make 1 week.
- Month: About 30 days make 1 month.
- Year: 12 months make 1 year.
4. Specified Activities Within Specified Time Frame
- Example: Completing homework in 30 minutes, playing for 1 hour, etc.
Evaluation
- Time is the ongoing sequence of _____ taking place.
a) events
b) days
c) months
d) years
- A _____ is used to measure hours and minutes.
a) calendar
b) clock
c) ruler
d) balance
- A _____ is used to measure short periods of time.
a) clock
b) calendar
c) stopwatch
d) scale
- The smallest unit of time is the _____.
a) minute
b) second
c) hour
d) day
- Sixty seconds make one _____.
a) hour
b) minute
c) day
d) week
- Sixty minutes make one _____.
a) day
b) week
c) hour
d) month
- Twenty-four hours make one _____.
a) week
b) month
c) hour
d) day
- Seven days make one _____.
a) week
b) month
c) year
d) hour
- About thirty days make one _____.
a) week
b) month
c) year
d) day
- Twelve months make one _____.
a) week
b) month
c) year
d) day
- A _____ is used to measure days, weeks, months, and years.
a) clock
b) calendar
c) stopwatch
d) ruler
- Completing homework in 30 minutes is an example of a task within a _____.
a) second
b) minute
c) time frame
d) week
- Playing for 1 hour is an example of an activity measured in _____.
a) days
b) weeks
c) hours
d) seconds
- We use a _____ to know the time of the day.
a) calendar
b) clock
c) stopwatch
d) ruler
- One year has _____ months.
a) 6
b) 8
c) 10
d) 12
Class Activity Discussion
- What is time?
Time is the ongoing sequence of events taking place.
- What tool is used to measure hours and minutes?
A clock is used to measure hours and minutes.
- What tool is used to measure short periods of time?
A stopwatch is used to measure short periods of time.
- What is the smallest unit of time?
The smallest unit of time is the second.
- How many seconds are in one minute?
There are 60 seconds in one minute.
- How many minutes are in one hour?
There are 60 minutes in one hour.
- How many hours are in one day?
There are 24 hours in one day.
- How many days are in one week?
There are 7 days in one week.
- How many days are in one month?
About 30 days are in one month.
- How many months are in one year?
There are 12 months in one year.
- What tool is used to measure days, weeks, months, and years?
A calendar is used to measure days, weeks, months, and years.
- What is an example of a task within a specified time frame?
Completing homework in 30 minutes.
- What is an example of an activity measured in hours?
Playing for 1 hour.
- How can we know the time of the day?
We can know the time of the day by looking at a clock.
- Why do we measure time?
We measure time to organize and plan our activities.
Presentation
Step 1: The teacher revises the previous topic which was the measurement of mass.
Step 2: The teacher introduces the new topic by showing a clock and a stopwatch, and explaining their uses.
Step 3: The teacher allows the pupils to give their own contributions and corrects them when and where necessary.
Teacher’s Activities
- Show and explain the use of clocks, stopwatches, and calendars.
- Demonstrate measuring time for various activities.
- Ask questions to check understanding.
Learners’ Activities
- Answer questions.
- Participate in measuring time.
- Record times for various activities.
Assessment
- Oral questions and answers.
- Practical measurement activities.
Evaluation Questions
- What is time?
- What tool do we use to measure hours and minutes?
- What tool do we use to measure short periods of time?
- What is the smallest unit of time?
- How many seconds are in one minute?
- Measure the time it takes to complete a task.
- Measure the time it takes to run a short distance.
- Why might some tasks take longer than others?
- What is longer, a minute or an hour?
- How can you use a stopwatch to measure time?
Conclusion
The teacher goes around to mark the pupils’ work and provides feedback.
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