Music JSS 1 Second Term Lesson Notes – Week 5

Subject: Music

Class: JSS 1

Term: Second Term

Week: 5

Age: 10–12 years

Topic: Bar, Bar Line, and Double Bar Line

Sub-topic: Understanding Bar Lines in Music Notation

Duration: 40 Minutes

Behavioral Objectives

By the end of the lesson, students should be able to:

1. Define a bar, bar line, and double bar line in music notation.
2. Explain the purpose of bar lines in music.
3. Identify different types of bar lines in music notation.
4. Demonstrate how bar lines are used in a musical score.
5. Differentiate between a single bar line and a double bar line.

Keywords

• Bar (Measure)
• Bar Line
• Double Bar Line
• Time Signature
• Musical Score

Set Induction

The teacher will show students a musical sheet with bar lines and ask them to describe what they see.

Entry Behavior

Students have learned about the staff, musical notes, and time values. This lesson introduces them to structuring music into bars.

Learning Resources and Materials

• Staff notation chart
• Flashcards of musical bars with different bar lines
• Manuscript paper for practical exercises

Building Background/Connection to Prior Knowledge

Students have been introduced to musical notes and rhythm. This lesson will help them understand how music is structured into bars (measures) for organization and readability.

Embedded Core Skills

• Observation Skills
• Critical Thinking
• Creativity

Lesson Content

1. Definition of Bar, Bar Line, and Double Bar Line

Bar (Measure):

• A bar (or measure) is a section of music that contains a specific number of beats, determined by the time signature.
• Bars help organize music into smaller, readable parts.

Bar Line:

• A bar line is a vertical line drawn on the staff to separate one bar (measure) from another.

Double Bar Line:

• A double bar line consists of two vertical lines, usually found at the end of a section or the end of a musical piece.

2. Purpose of Bar Lines in Music

• Organizes music into sections for easy reading.
• Helps musicians maintain rhythm by dividing music into equal parts.
• Works with the time signature to determine how many beats are in each bar.
• Indicates the end of sections or the entire piece (double bar line).

3. Types of Bar Lines

a) Single Bar Line

• A single vertical line that separates bars (measures).

b) Double Bar Line

• Two vertical lines used to mark the end of a section or an entire piece.

c) Final Bar Line

• A bold double bar line used to indicate the end of a composition.

d) Repeat Bar Line

• A double bar line with dots, indicating a section should be repeated.

4. Examples of Bars and Bar Lines in Different Time Signatures

Evaluation

Answer the following questions:

1. A bar line is used to:
   a) Separate sections in music
   b) Show the tempo
   c) Indicate note duration
   d) None of the above

2. What does a double bar line indicate?
   a) A note change
   b) The end of a section or the entire piece
   c) A change in instrument
   d) A repeat

3. A measure (bar) is ____.
   a) A tempo marking
   b) A section of music defined by a time signature
   c) A type of note
   d) None of the above

4. How many lines make up a double bar line?
   a) 1
   b) 2
   c) 3
   d) 4

5. The bold double bar line is called ____.
   a) Repeat bar line
   b) Final bar line
   c) Single bar line
   d) None of the above

6. In 4/4 time, how many beats are in each bar?
   a) 2
   b) 3
   c) 4
   d) 5

7. Which bar line tells musicians to repeat a section?
   a) Single bar line
   b) Double bar line
   c) Final bar line
   d) Repeat bar line

8. What is the purpose of a bar line?
   a) To separate measures
   b) To change instruments
   c) To add melody
   d) To write lyrics

9. Which of these is NOT a type of bar line?
   a) Single bar line
   b) Double bar line
   c) Triple bar line
   d) Repeat bar line

10. Bars (measures) help musicians:
    a) Read music easily
    b) Play randomly
    c) Ignore rhythm
    d) Change instruments

Class Activity Discussion (FAQs)

1. What is a bar in music?

   • A section of music with a fixed number of beats, determined by the time signature.

2. What is a bar line?

   • A vertical line used to separate bars.

3. What is a double bar line?

   • Two vertical lines that mark the end of a section or the piece.

4. Why are bar lines important?

   • They help organize music and maintain rhythm.

5. What does a repeat bar line do?

   • It tells musicians to repeat a section of the music.

6. What is a final bar line?

   • A bold double line that marks the end of the piece.

7. Do all songs have bar lines?

   • Yes, every piece of written music is divided into measures.

8. Can time signatures affect bar structure?

   • Yes, the time signature determines how many beats fit into each bar.

9. Where is a double bar line placed?

   • At the end of a section or the end of a song.

10. What happens if there are no bar lines?

    • The music would be difficult to read and play correctly.

Assessment (Evaluation Questions)

1. Define bar, bar line, and double bar line.
2. State the purpose of bar lines in music.
3. Draw an example of a double bar line.
4. Explain the difference between a single bar line and a final bar line.
5. Identify the function of a repeat bar line.

Conclusion

The teacher will review students’ answers, provide corrections, and summarize the importance of bar lines in structuring music notation.